In order to use an online calculator to convert square feet to linear feet, two basic measurements must be known. The first is the width in inches of the material being measured. T...The area of a right triangle is equal to ½ the product of the base times the height, or 1/2 (BXH)= Area. The area calculation for the right triangle below would look like: 1/2 (B X H) = AREA. 1/2 (14 X 6) = 42 SQUARE FEET. On a calculator you would perform: 14×6/2. You can use a shortcut method when estimating the area for a gable end for a ...Triangle angle calculator is a safe bet if you want to know how to find the angle of a triangle. Whether you have three sides of a triangle given, two sides and an angle or just two angles, this tool is a solution to your geometry problems. Below you'll also find the explanation of fundamental laws concerning triangle angles: triangle angle sum ...For a square grid, the formula is: plant spacing = √ (1 / density) and for a triangular grid, the formula is: plant spacing = √ (2 / (√3 × density)) where density could be plants/m2 or plants/ft2 and plant spacing could be m or ft, accordingly.Example: Find the area of this triangle: ; Area =(½)ab sin C ; Put in the values we know:½ × 7 × 10 × sin(25º) ; Do some calculator work:35 × 0.4226... ; Area = ...Sep 29, 2011 · You can use these calculations to determine that here. Use this calculation to calculate the area of a square or a rectangle. This calculation will calculate the area of a circle using either the diameter, the radius or the circumference as input. Calculate the area of a (right-angled) triangle with this calculation. Although side a and angle A are being used, any of the sides and their respective opposite angles can be used in the formula. This free triangle calculator computes the edges, angles, area, height, perimeter, median, …May 10, 2020 · 1 roof square = 100 square feet; The length (l) times the height (h) of a triangle is twice its area (A2). So if you divide your answer of a product of length times height by two, you will get the area of a triangle. (l×h)/2 = Area. Calculating an area of a triangle when estimating a roof Square footage Rectangle= Length*Width. Ex. 15 feet*10 feet =150 square feet. Triangle: In this case you need the 3 sides of the triangle. If you input these three details in the form you will get the result, otherwise this is the formula to use: Square footage Triangle= Square root(S*(S-Edge 1)*(S-Edge 2)*(S-Edge 3)). Where S=(Edge 1+ Edge 2 ...Help others, God will help you in returnJoin my WhatsApp group: https://chat.whatsapp.com/CxcOXZKIkUnHeCLH06PYr2access to my courses: click link belowhttps:/...Help others, God will help you in returnJoin my WhatsApp group: https://chat.whatsapp.com/CxcOXZKIkUnHeCLH06PYr2access to my courses: click link belowhttps:/...Need a custom math course? Visit https://www.MathHelp.com.This lesson covers the area of a triangle. Students learn that the formula for the area of a triang...By dividing a rectangle into two congruent triangles, we can see that each triangle represents half of the rectangle's total area. This leads us to the formula ...Feb 8, 2023 · How to Calculate Square Footage of a Triangle. To figure the square footage of a triangle, measure the base and height in feet. Then use this formula: Square footage of a triangle = 0.5 x base x height. So, if the base of your triangle is 10 feet and the height is 7 feet, the total square footage of the triangle is 35. Calculator Use. An isosceles triangle is a special case of a triangle where 2 sides, a and c, are equal and 2 angles, A and C, are equal. In our calculations for a right triangle we only consider 2 known sides to calculate the other 7 unknowns. For example, if we know a and b we know c since c = a.For a square grid, the formula is: plant spacing = √ (1 / density) and for a triangular grid, the formula is: plant spacing = √ (2 / (√3 × density)) where density could be plants/m2 or plants/ft2 and plant spacing could be m or ft, accordingly.Tile Calculator. The following tool estimates the total number of tiles necessary to cover a floor, roof, wall, or any other surface. It also considers the gap or overlap between tiles for better accuracy, as shown in the figure below. tile …"Obtuse" describes a triangle that comprises: 1x angle that measures over 90 degrees (>90°), called an obtuse angle; and; 2x angles that measure less than 90 degrees (<90°), called the acute angles.; The obtuse triangle is one of two types of oblique triangles - the other one is acute.How to calculate the square footage of a triangle? How to find the square footage of a triangle 1 Measure the length of the base and the height of the triangle in feet. 2 Multiply your base and height measurements together. 3 Divide your total by two to get the square footage of the triangle More.By dividing a rectangle into two congruent triangles, we can see that each triangle represents half of the rectangle's total area. This leads us to the formula ...Therefore, the height of the triangle will be the length of the perpendicular side. Area of a Right Triangle = A = ½ × Base × Height (Perpendicular distance) Area of triangle ACB = 1/2 × a × b. An equilateral triangle is a …Tam asks, “What size exhaust fan should we use in our small bathroom?”If your bathroom has an 8’ ceiling, the cubic feet per minute (CFM) rating for your fan should be as high or h...An easy to use, free perimeter calculator you can use to calculate the perimeter of shapes like square, rectangle, triangle, circle, parallelogram, trapezoid, ellipse, octagon, and sector of a circle. Formulas, explanations, and graphs for each calculation. Perimeter of a triangle calculation using all different rules: SSS, ASA, SAS, SSA, etc. Omni's triangle side calculator allows you to calculate the length of the sides of a triangle. Continue reading to find out how to calculate the sides of a triangle for three different cases: If two sides and one angle are known; If two angles and one side are known; and; If two sides and the perimeter are known.Sometimes it is called a quadrangle or a tetragon, by analogy to three-sided triangles and polygons with more sides (pentagon, hexagon, heptagon, octagon, etc.). Quadrilaterals can be: ... The quadrilateral area calculator displays the area, as well as the perimeter. The area is equal to 39,259 ft, and the perimeter is 890 ft in our example.The formula: Area of a Triangle = (1/4) x √ [ (a+b+c) x (b+c-a) x (c+a-b) x (a+b-c) ] Length of ...The Area of a Triangle with three known Sides calculator computes the area of a triangle based on the length of its three sides.Divide the area into squares, rectangles, triangles, and circles. Measure each area and calculate square footage. Total all the measurements using our easy sod calculator below, adding 5-10% for cutting and shaping …To find the area of a triangle, multiply the length times the width and divide it by two. You often refer to the ' width ' and ' length ' by the terms ' base &#...Tam asks, “What size exhaust fan should we use in our small bathroom?”If your bathroom has an 8’ ceiling, the cubic feet per minute (CFM) rating for your fan should be as high or h...How to calculate the square footage of a room. Measure the length and width of the room in feet. Next, multiply the length and width together to get the square footage. Example: For a room measuring 10 feet wide by 14 feet long, your calculation is 10 × 14 = 140 square feet. Article sections.To calculate the length of the diagonal of a square, multiply the length of the side by the square root of 2: diagonal = √2 × side. Ingrain this relationship into your brain and heart so that never again will you wonder how to find the diagonal of a square. Let's analyze an example. If the square side is equal to 5 in, then the diagonal is 5 ...Measure the length and width, in feet, of each room. Then, multiply the length by the width to calculate that room’s square footage. For example: If a bedroom is 12 feet by 20 feet, it is 240 ...6. Add up the lengths of the three side lengths to find the perimeter. Recall that the perimeter P = a + b + c. Now that you know the lengths of sides a, b and c, you simply need to add the lengths together to find the perimeter. In our first example, P = 3 + 4 + 5, or 12. In our second example, P = 6 + 8 + 10, or 24 .h = a × √3 / 2. Substituting h into the first area formula, we obtain the equation for the equilateral triangle area: area = a² × √3 / 4. 2. Using trigonometry. Let's start with the trigonometric triangle area formula: area = (1/2) × a × b × sin (γ), where γ is the angle between the sides. We remember that all sides and all angles ...Lumber calculator formula. Our calculator works out the board feet of standard three dimensional wood material based on the measurements you provide.A new urban farm is under construction on top of a six-story building in Paris, France, and at 150,000 square feet, it will be the largest in the world. Paris, a city of two millio...If your room has many angles, use this formula for a triangle — it’s just a rectangle or square cut in half! Length (in feet) x width (in feet) ÷ 2 = area in sq. ft. How to calculate square footage of a House. Calculating the square rate is relatively easy. To measure the total square feet of a house, complete this process in every house room.Directions: Use the calculator above to calculate your square footage. You can enter feet only, inches only or any combination of the two. *Square Footage is also known as (a.k.a) square feet, square ft, SqFt, Sq.Ft., sq.ft., ft2 & ft 2 **This Calculator also calculates square inches, total height in feet, total height in inches, total length in feet and total …How to calculate the square footage of a room. Measure the length and width of the room in feet. Next, multiply the length and width together to get the square footage. Example: For a room measuring 10 feet wide by 14 feet long, your calculation is 10 × 14 = 140 square feet. Article sections.Jun 30, 2022 ... Square Footage of a triangle = [½ × Base × Height] sq. ft. where base and height are measured in feet. Square Footage Formula for a rectangle.ft2 is the abbreviation for square feet. linear meters to square meters conversion online and m2 to linear meters. Feet to linear feet (Ft to LF, ft to LF) online calculator. How many linear feet are in square feet? Linear feet = Square feet / width of one linear feet. LF = Sq ft / (width of one LF)2. Divide the isosceles into two right triangles. Draw a line down from the vertex between the two equal sides, that hits the base at a right angle. You now have two equal right triangles. This line divides θ perfectly in half. Each right triangle has an angle of ½θ, or in this case (½) (120) = 60 degrees. 3.Things You Should Know. Find the area of any quadrilateral by dividing it into 2 triangles. Then, find the area of each of those triangles using the formula. A = 1 2 b h {\displaystyle A= {\frac {1} {2}}bh} (Area = …An easy to use, free area calculator you can use to calculate the area of shapes like square, rectangle, triangle, circle, parallelogram, trapezoid, ellipse, octagon, and sector of a circle. Formulas, explanations, and graphs for each calculation. Area of a triangle calculation using all different rules, side and height, SSS, ASA, SAS, SSA, etc.Example: Find the area of this triangle: ; Area =(½)ab sin C ; Put in the values we know:½ × 7 × 10 × sin(25º) ; Do some calculator work:35 × 0.4226... ; Area = ...Jan 18, 2024 · area = 0.25 × √ ( (a + b + c) × (-a + b + c) × (a - b + c) × (a + b - c) ) Two sides and the angle between them (SAS) You can calculate the area of a triangle easily from trigonometry: area = 0.5 × a × b × sin (γ) Two angles and a side between them (ASA) Step 1: Identify and write down the side measurement of the pentagon. a = 6cm a = 6 cm. Step 2: Write down the pentagon perimeter formula. p = 5 × a p = 5 × a. Step 3: Substitute the values in the formula and calculate the perimeter of the pentagon. p = 5 × a p = 5 × a. p = 5 × 6 p = 5 × 6. p = 30cm p = 30 cm.Determine the width and length. Length can also be height. If your width and length are not measured in feet convert measurements into feet. For inches divide by 12. For yards multiply by 3. For centimeters multiply by 0.03281. For meters multiply by 3.281. Finally, multiply Length (ft) x Width (ft) = Square Footage.When it comes to the formulas used for calculating total square footage, you are simply determining the area of the shape in question, using very geometry math. The most common square feet area formulas are: Square: A = s2 (Side Squared) Rectangle: A = ab (Side A x Side B) Circle: A = πr2 (Pi x Radius Squared) If you are looking for an easy tool to calculate the height in any triangle, you're in the right place – this triangle height calculator is the tool for you.Whether you are looking for the triangle height formulas for special triangles such as the right, equilateral or isosceles triangle or any scalene triangle, this calculator is a safe bet – it can …Omni's triangle side calculator allows you to calculate the length of the sides of a triangle. Continue reading to find out how to calculate the sides of a triangle for three different cases: If two sides and one angle are known; If two angles and one side are known; and; If two sides and the perimeter are known.2. CIRCLE. For a circular carpet, the only value you need to put in the calculator is the radius of your carpet. Then, the carpet price calculator will work out the area with this equation: carpet area = π × radius². To calculate the carpet's cost, put in the price of the carpet per unit and the area you have just calculated in the following formula: ...There are a number reasons to calculate square footage, such as for measuring a home with the purpose of putting a price on square footage when selling it. Remodeling projects may ...6. Add up the lengths of the three side lengths to find the perimeter. Recall that the perimeter P = a + b + c. Now that you know the lengths of sides a, b and c, you simply need to add the lengths together to find the perimeter. In our first example, P = 3 + 4 + 5, or 12. In our second example, P = 6 + 8 + 10, or 24 .An easy to use, free perimeter calculator you can use to calculate the perimeter of shapes like square, rectangle, triangle, circle, parallelogram, trapezoid, ellipse, octagon, and sector of a circle. Formulas, explanations, and graphs for each calculation. Perimeter of a triangle calculation using all different rules: SSS, ASA, SAS, SSA, etc.Method 1: You can directly convert the area in square feet to square miles. Method 2: You can first convert the length and width into miles and then multiply them together to find the area. In both of these situations, the most important piece of information is how many feet there are in a mile. There are 5,280 feet in 1 mile.This fact makes it much easier to calculate their area than if they were isosceles triangles or even 45 45 90 triangles as in the case of a square. For the regular triangle, all sides are of the same length, which is the …Using square footage formula, Area of a rectangle = Length × Breadth. Thus, are of each tile = 8 × 36 = 288 square inches. But, 1 square foot = 12 in × 12 in = 144 square inches. Thus, 288 square inches = 2 square feet. Hence, the area of each tile is 2 square feet.Jan 18, 2024 · Omni's triangle side calculator allows you to calculate the length of the sides of a triangle. Continue reading to find out how to calculate the sides of a triangle for three different cases: If two sides and one angle are known; If two angles and one side are known; and; If two sides and the perimeter are known. Calculate the area of a triangle. Calculate the area of a right-angled triangle. It is the same formula in both types of triangles in the figure. The mark b in ...Area of a trapezoid formula. The formula for the area of a trapezoid is (base 1 + base 2) / 2 x height, as seen in the figure below: The calculation essentially relies on the fact a trapezoid's area can be equated to that of a rectangle: (base 1 + base 2) / 2 is actually the width of a rectangle with an equivalent area. triangle area calculator - step by step calculation, formula & solved example problem to find the area for the given values of base b, ...3 days ago · To calculate the isosceles triangle area, you can use many different formulas. The most popular ones are the equations: Given leg a and base b: area = (1/4) × b × √ ( 4 × a² - b² ) Given h height from apex and base b or h2 height from the other two vertices and leg a: area = 0.5 × h × b = 0.5 × h2 × a. Given any angle and leg or base. Apr 20, 2017 · The Area of a Triangle with three known Sides calculator computes the area of a triangle based on the length of its three sides. INSTRUCTIONS: Choose units and enter the following: (a) Length of Side a (b) Length of Side b (c) Length of Side c ; Area of Triangle (A): The calculator returns the area in square feet (ft 2). However, this can be ... Jul 28, 2023 · How to calculate the square footage of a room. Measure the length and width of the room in feet. Next, multiply the length and width together to get the square footage. Example: For a room measuring 10 feet wide by 14 feet long, your calculation is 10 × 14 = 140 square feet. Article sections. 1 roof square = 100 square feet; The length (l) times the height (h) of a triangle is twice its area (A2). So if you divide your answer of a product of length times height by two, you will get the area of a triangle. (l×h)/2 = Area. Calculating an area of a triangle when estimating a roofThe area of a right triangle is equal to ½ the product of the base times the height, or 1/2 (BXH)= Area. The area calculation for the right triangle below would look like: 1/2 (B X H) = AREA. 1/2 (14 X 6) = 42 SQUARE FEET. On a calculator you would perform: 14×6/2. You can use a shortcut method when estimating the area for a gable end for a ...Lumber calculator formula. Our calculator works out the board feet of standard three dimensional wood material based on the measurements you provide.When it comes to the formulas used for calculating total square footage, you are simply determining the area of the shape in question, using very geometry math. The most common square feet area formulas are: Square: A = s2 (Side Squared) Rectangle: A = ab (Side A x Side B) Circle: A = πr2 (Pi x Radius Squared) An easy to use, free area calculator you can use to calculate the area of shapes like square, rectangle, triangle, circle, parallelogram, trapezoid, ellipse, octagon, and sector of a circle. Formulas, explanations, and graphs for each calculation. Area of a triangle calculation using all different rules, side and height, SSS, ASA, SAS, SSA, etc.To figure the square footage of a Gable (the triangle wall area that meets the roof line), measure the length (L) multiplied by the height (H) at the highest ...This relationship is useful because if two sides of a right triangle are known, the Pythagorean theorem can be used to determine the length of the third side. Referencing the above diagram, if. a = 3 and b = 4. the length of c can be determined as: c = √ a2 + b2 = √ 32+42 = √ 25 = 5. It follows that the length of a and b can also be ...Method 1: You can directly convert the area in square feet to square miles. Method 2: You can first convert the length and width into miles and then multiply them together to find the area. In both of these situations, the most important piece of information is how many feet there are in a mile. There are 5,280 feet in 1 mile.Use the calculator above to calculate a triangle's square footage. You can enter feet only, inches only or a combination of the two. *Square Footage is also known as (a.k.a) square feet, square ft, SqFt, Sq.Ft., sq.ft., ft2 & ft 2 Sketch out the area where sod will be installed, draw squares, rectangles, triangles or circles. Measure each area. Use the HARMONY BRANDS sod calculator to figure out how much sod you need, it will also calculate a 10% extra for cutting around landscape.Triangle Calculator. Please provide 3 values including at least one side to the following 6 fields, and click the "Calculate" button. When radians are selected as the angle unit, it can take values such as pi/2, pi/4, etc. A triangle is a polygon that has three vertices. How to calculate square feet for triangles. The square footage formula for triangles is: A = 1/2 base x height. In this equation, "A" is the area of the triangle in …Directions: Use the calculator above to calculate your square footage. You can enter feet only, inches only or any combination of the two. *Square Footage is also known as (a.k.a) square feet, square ft, SqFt, Sq.Ft., sq.ft., ft2 & ft 2 **This Calculator also calculates square inches, total height in feet, total height in inches, total length in feet and total …Use this calculator to find the square footage, square inches, square yardage, square meters or acres for a building, home, garden or construction project. …area = √ 115.5 × (115.5 - 77) 3 = 2567.33 sq ft. Since the longest distance between any two points of an equilateral triangle is the length of the edge of the triangle, the farmer reserves the edges of the pool for swimming "laps" in his triangular pool with a maximum length approximately half that of an Olympic pool, but with double the area – all under the watchful eyes of the presiding ... A = (b x h) / 2. Plug your measured values for base and height into this formula. For example, if you have a triangle with a base measuring 10 feet and a height measuring 6 feet: A = (10 ft x 6 ft) / 2. A = 60 sq ft / 2. A = 30 sq ft. The triangle’s area is 30 square feet. An easy to use, free perimeter calculator you can use to calculate the perimeter of shapes like square, rectangle, triangle, circle, parallelogram, trapezoid, ellipse, octagon, and sector of a circle. Formulas, explanations, and graphs for each calculation. Perimeter of a triangle calculation using all different rules: SSS, ASA, SAS, SSA, etc.The area of a circle is pi (i.e. 3.14) times the square of the radius. A_\text {rectangle} = l \times w \\ \text {} \\ A_\text {circle} = \pi r^2 Arectangle = l×w Acircle = πr2. Find the area of the shaded region by subtracting the area of the small shape from the area of the larger shape. The result is the area of only the shaded region ...A triangle is determined by 3 of the 6 free values, with at least one side. Fill in 3 of the 6 fields, with at least one side, and press the 'Calculate' button. (Note: if more than 3 fields are filled, only a third used to determine the triangle, the others are (eventualy) overwritten. 3 …Jan 18, 2024 · An isosceles right triangle is a right angle triangle with two equal sides and two equal angles. Because two sides are equal, and one of its interior angles is equivalent to 90 degrees, it is considered both an isosceles and a right-angle triangle. 2. CIRCLE. For a circular carpet, the only value you need to put in the calculator is the radius of your carpet. Then, the carpet price calculator will work out the area with this equation: carpet area = π × radius². To calculate the carpet's cost, put in the price of the carpet per unit and the area you have just calculated in the following formula: ...A trapezoid is a 4-sided geometrical shape with two sides parallel to each other. These two sides (a and b in the diagram) are called the bases of the trapezoid.The other two sides (c and d) are called legs.h is the height of the trapezoid.. All internal angles of a trapezoid sum to give 360°.
6. Add up the lengths of the three side lengths to find the perimeter. Recall that the perimeter P = a + b + c. Now that you know the lengths of sides a, b and c, you simply need to add the lengths together to find the perimeter. In our first example, P = 3 + 4 + 5, or 12. In our second example, P = 6 + 8 + 10, or 24 .. Can xanax lower blood pressure
SF circle = π * Radius * Radius. Where: π = 3.14159265359. Rhombus requires that the base and its height to be given: SF rhombus = Base * Height. Where: SF = square footage. 16 Apr, 2015. This square footage calculator finds the square footage of a house, room, property, lot or land with any of the following shape rectangle, triangle ... Triangle: Area (ft 2) = (1/4) × [ (a + b + c) × (b + c - a) × (c + a - b) × (a + b - c) ] 0.5 Annulus: Area (ft 2) = Pi × [ (Outer Diameter / 2) 2 - (Inner Diameter / 2) 2] Ellipse: Area …The easy ones are Square and rectangle, circles and triangle could be a bit tricky. Step 4: Calculate the area of each shape using our Square footage calculator. For rectangles and squares, multiply width by height. For triangles, multiply the base by the height and then divide by 2. For circles, multiply the radius square by 3.14 (pi).The formula for area varies depending on the shape you are dealing with. Some common formulas include: Rectangle or Square: Area = Length × Width. Circle: Area = π × (radius)^2. Triangle: Area = 0.5 × Base × Height. Parallelogram: Area = Base × Height. Trapezoid: Area = 0.5 × (sum of parallel sides) × Height.To calculate square footage of a triangular shape, you need to calculate the area of the triangle with feet as the unit of measurement. Measure the length of the base and the height. Measure the length of the base and the height of the triangle. The base can be any side, but make sure it is consistent throughout the entire process.Jun 1, 2020 ... This math video tutorial explains how to calculate the square footage of an irregular shape or composite figure.A = (b x h) / 2. Plug your measured values for base and height into this formula. For example, if you have a triangle with a base measuring 10 feet and a height measuring 6 feet: A = (10 ft x 6 ft) / 2. A = 60 sq ft / 2. A = 30 sq ft. The triangle’s area is 30 square feet. Jan 18, 2024 · Let's assume that you want to calculate the area of a certain trapezoid. All the data given is: α = 30° γ = 125° h = 6 cm. a = 4 cm. P = 25 cm. Calculate the remaining internal angles. As α + β = 180°, β = 180° - 30 ° = 150°. Similarly, as γ + δ = 180°, δ = 180° - 125° = 55°. The area of a circle is pi (i.e. 3.14) times the square of the radius. A_\text {rectangle} = l \times w \\ \text {} \\ A_\text {circle} = \pi r^2 Arectangle = l×w Acircle = πr2. Find the area of the shaded region by subtracting the area of the small shape from the area of the larger shape. The result is the area of only the shaded region ...Area=(1/2) x Base x Height. Where the height is an altitude drawn from the base to the opposite angle. This formula makes for a relatively easy calculation of ...In order to use an online calculator to convert square feet to linear feet, two basic measurements must be known. The first is the width in inches of the material being measured. T...A = sqrt (s * (s – a) * (s – b) * (s – c)) A represents the area of the scalene triangle. s is the semi-perimeter of the triangle, calculated as s = (a + b + c) / 2. a, b, and c are the lengths of the triangle’s three sides. This formula may look complex, but with the given side lengths and a calculator, it becomes a straightforward ... You can use these calculations to determine that here. Use this calculation to calculate the area of a square or a rectangle. This calculation will calculate the area of a circle using either the diameter, the radius or the circumference as input. Calculate the area of a (right-angled) triangle with this calculation.area = √ 115.5 × (115.5 - 77) 3 = 2567.33 sq ft. Since the longest distance between any two points of an equilateral triangle is the length of the edge of the triangle, the farmer …The surface area of a closed cylinder can be calculated by summing the total areas of its base and lateral surface: base SA = 2πr 2. lateral SA = 2πrh. total SA = 2πr (r + h) where r is the radius and h is the height. Jeremy has a large cylindrical fish tank that he bathes in because he doesn't like showers or bathtubs.This relationship is useful because if two sides of a right triangle are known, the Pythagorean theorem can be used to determine the length of the third side. Referencing the above diagram, if. a = 3 and b = 4. the length of c can be determined as: c = √ a2 + b2 = √ 32+42 = √ 25 = 5. It follows that the length of a and b can also be ...Measure the width and height of windows, doors and any other areas that will not be covered with siding. Multiply height by width for each area and add to get total square footage not covered with siding. Enter this total square footage here. Total sq ft. Steps 2 and 3 have been added together, and Step 4 has been subtracted from this sum.Sometimes it is called a quadrangle or a tetragon, by analogy to three-sided triangles and polygons with more sides (pentagon, hexagon, heptagon, octagon, etc.). Quadrilaterals can be: ... The quadrilateral area calculator displays the area, as well as the perimeter. The area is equal to 39,259 ft, and the perimeter is 890 ft in our example.Example: Find the area of this triangle: ; Area =(½)ab sin C ; Put in the values we know:½ × 7 × 10 × sin(25º) ; Do some calculator work:35 × 0.4226... ; Area = ....