How to calculate the area of a rectangle

how to calculate the area of a rectangle

Area of a Rectangle Calculator

The area of any rectangular place is or surface is its length multiplied by its width. For example, a garden shaped as a rectangle with a length of 10 yards and width of 3 yards has an area of 10 x 3 = 30 square yards. A rectangular bedroom with one wall being 15 feet long and the other being 12 feet long is simply 12 x 15 = square feet. A rectangle has four sides and four right angles. We will give all corners labels A, B, C, and D. We will also identify the diagonal point through point B to C with a small d. To find the area of a rectangle, you multiply the A side by the B side.

Last Updated: August 6, References. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. This article has been viewed 69, times. Learn more A rectangle is a plane, a quadrilateral that has 4 right angles.

The sides rectanlge are parallel to each other are identical in length. Rectsngle squares are rectangles, but not all rectangles are squares. The perimeter of an object is the sum of all the lengths of the sides of that object. Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue. No account yet? Create an account. Edit this Article. We use cookies to make wikiHow great.

By using our zrea, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow. Download Article Explore this Article parts. Things You'll Need. Related Articles. Part 1 of Ensure you are working with a true rectangle. The picture aera shows a rectangle where the top and bottom lines are equal in length and the sides are equal in length. The top and bottom are parallel to each other, while the sides are also parallel to each other.

Squares are a type of rectangle. If the object you are looking at howw not meet these conditions, then it is not a rectangle. The units for area can be any unit for the measure of length squared: feet squared, meters calculxte, centimeters squared, etc. You will see the units written as ft 2m 2cm 2etc. Identify the length and the width of the rectangle.

The length of the rectangle is equal to the top or bottom of the rectangle. The width is equal hoe the side of the rectangle. Using a ruler, hkw each side of the rectangle to determine the length and the width.

In the above example, the length is 5 cm and the width is 2 cm. Plug in the variables and solve the equation. Using the length and width you just measured, plug them into the formula to solve for the area. Multiply the length times the width to calculate area. Part 2 of If all four sides of the object are identical, then you have a square. This is the same formula written in a slightly different way.

The units for perimeter can be any recgangle for the measure of length: feet, miles, meters, centimeters, etc. Using the length and width you just measured, plug them into the formula to solve for the perimeter. There are two aclculate to solve the equation depending on which formula you have used. Various combinations of length and width could form an area of 50, and therefore the perimeter could be various sizes. For example, if the rectangle measured 5 x 10, the caldulate would what does the name amarah mean 50, and the perimeter cslculate be If the rectangle measured 2 x 25, the area would be calculwte, and what is password based encryption perimeter would be Yes No.

Not Helpful 0 Helpful 4. A rectangle measuring 9 feet by 8 feet would have an area of 72 square feet. Not Helpful 2 Helpful 8. A boy runs around a rectangular ground. Its length is thf its breadth. If the boy covers 2 km in 5 rounds, what is the length of the ground? Not Rectnagle 3 Helpful 5. Divide the area by the length to get the width.

To get the perimeter, add twice the width rectnagle twice the length. Not Helpful 5 Helpful 4. Mary is making a quilt from square pieces of cloth. She fit 10 pieces along one side and 15 pieces along the other. How many pieces does she need? Assuming that the lengths each consist of 15 squares, and the widths each consist of 10 additional squares with no corner squares being counted twice, i.

Not Helpful 5 Helpful 3. If the area and perimeter are given, how can I get the length and width of a rectangle? Set up two equations in two unknowns. Let l be the length and w the width. Then write the equation for area in l and w. Then write the equation for perimeter in l and w. Then solve the equations simultaneously. Not Helpful 4 Helpful 4. For example, a rectangle measuring 4 x 6 too have a perimeter of 20, but a rectangle measuring 3 x 8 would have a perimeter of Not Helpful 3 Helpful 4.

Not Helpful 2 Helpful 0. If I have an irregularly-shaped area, how can I calculate the area by measuring the perimeter only? Not Helpful 4 Helpful 1. Include your email address to get a message when this question is answered. By using this service, some information may be shared with YouTube. Submit a Tip All tip submissions are carefully reviewed how to remove plaster of paris bandage being published.

Related wikiHows How to. How to. About This Article. Co-authored by:. Co-authors: Updated: August 6, Categories: Calculating Volume and Area. Italiano: Trovare l'Area how to make cool playercards on black ops il Perimetro di un Rettangolo.

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How to calculate the area of a rectangle?

Last Updated: October 13, References. To create this article, 31 people, some anonymous, worked to edit and improve it over time. There are 10 references cited in this article, which can be found at the bottom of the page. This article has been viewed , times. Learn more A rectangle is a quadrilateral [1] X Research source with two sides of equal length and two sides of equal width that contains four right angles.

To find the area of a rectangle, all you have to do is multiply its length with its width. If you want to know how to find the area of a rectangle, just follow these easy steps.

To quickly calculate the area of a rectangle, find the length of the base. Then, multiply the base by the height of the rectangle to get the area. For example, a rectangle with a base of 6 and a height of 9 has an area of Be sure to include the units of the measurements in your answer.

If you need to find the area if you only know the area or the length of 1 side and a diagonal, keep reading the article! Did this summary help you? Yes No. Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue.

No account yet? Create an account. Edit this Article. We use cookies to make wikiHow great. By using our site, you agree to our cookie policy.

Cookie Settings. Learn why people trust wikiHow. Download Article Explore this Article methods. Tips and Warnings. Related Articles. Article Summary. Method 1 of Understand the rectangle. The rectangle is a quadrilateral, which means it has four sides.

If one side of the rectangle is 10, for example, then the opposite side's length will also be Also, every square is a rectangle, but not all rectangles are squares.

So treat squares like rectangles in terms of finding its area. Learn the equation for finding the area of a rectangle.

This means that the area is equal to the length of the rectangle times its width. Method 2 of Find the length of the rectangle. In most cases, you will be given the length, but if not, you can find it using a ruler. Find the width of the rectangle.

Use the same methods to find it. Note that the single hash marks on the wide sides of the rectangle mean that the two widths have equal length. Write the length and width next to each other. In this example, the length is 5 cm and the width is 4 cm. Multiply the length times the width.

State your answer in square units. Method 3 of Understand the Pythagorean theorem. The Pythagorean theorem is a formula for finding the third side of a right triangle if you know the value of two of the sides.

You can use it to find the hypotenuse of a triangle, which is its longest side, or its length or width, which meet at a right angle. Use the Pythagorean theorem to solve for the other side of the triangle. Let's say that you have a rectangle with a side of 6 cm and a diagonal of 10 cm. Use 6 cm for one side, use b for the other side, and take 10 cm as your hypotenuse.

Now just substitute your known quantities into the Pythagorean theorem and solve. Now that you've used the Pythagorean theorem to find the length and width of the rectangle, all you have to do is multiply them. You cannot find an area in meters, because area is expressed in square meters. If the values of your rectangle sides are not in meters, then you must first convert those units to meters, and then multiply the converted values to get the area in square meters.

Not Helpful 13 Helpful If the problem says length is breadth is 81 and other said of length is and breadth is 53, how do I find the area of the rectangle? A rectangle has 2 sides of equal length and 2 sides of equal width breadth.

By definition, the object in which you are describing is not a rectangle. The object you have is an irregular quadrilateral. Not Helpful 15 Helpful It is not a rectangle if each side is a different length. It is either an irregular shape or a trapezoid. There is no formula for finding the area of an irregular shape. The area of a trapezoid is found by multiplying its height by the average of its bases. If both the sides are labeled with that same number, then it is a square.

Square the number to get the area. If it's not a square, you can't, unless there's more information available than you're letting on like an equation to calculate the length of the other side. Not Helpful 11 Helpful The area of a rectangle is calculated by multiplying its width times its length. You'll need this info, not the diagonal, to solve the problem. Not Helpful 35 Helpful The area of a rectangle is equal to its length multiplied by its width.

If you have only the area and width, you can use the same equation to solve for the area. Divide 60 by 5 to find x, or the length. The answer here is Not Helpful 9 Helpful There is no such thing as an irregular rectangle. All rectangles are made of two sets of parallel lines, and each rectangles has four degree angles. The area is calculated by multiplying the length of the rectangle by its width.

Not Helpful 16 Helpful Not Helpful 14 Helpful There is no area formula for a non-specific quadrilateral. There are commonly available area formulas for a square, rectangle, parallelogram, rhombus, and trapezoid.

Not Helpful 13 Helpful 8. How can I find the length and width of a rectangle with only the perimeter and area? This is a "two equations in two unknowns" situation. Write two equations, one for the area and one for the perimeter, both in terms of length and width. Solve either equation for one of the unknowns.

Plug that value back into either equation, which will give you the value of the other unknown. Not Helpful 6 Helpful Include your email address to get a message when this question is answered. All squares are rectangles. However, not all rectangles are squares. Helpful 0 Not Helpful 0. Submit a Tip All tip submissions are carefully reviewed before being published. Related wikiHows How to.

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