How do you find area if you have perimeter?

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How do you find area if you have perimeter?

What is its area? Divide the perimeter by 4: that gives you the length of one side. Then square that length: that gives you the area.

What is the perimeter of 80 square feet?

Multiply the length of one wall by 4 to calculate the perimeter of a square room, since all four sides of a square are the same length by definition. Think of the floor as the square. For example, suppose the length of one wall is 20 feet. 20 multiplied by 4 gives a perimeter of 80 feet.

What is the length of the rectangle which will give the maximum area?

For a given perimeter, the area will be maximized when all the sides are the same length, which makes it actually a square. A square is still a rectangle, though! So, if you know the perimeter, divide it by four to determine the length of each side. Then multiply the length times the width to get the area.

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What is the formula for finding the perimeter of a rectangle?

Write down the basic formula for finding the perimeter of a rectangle. This formula will help guide you as you calculate the perimeter of your own rectangle. The basic formula is: P = 2 * (l + w). Perimeter is always the total distance around the outside edge of any shape, whether it is simple or compound.

What is the formula for finding area and perimeter?

There are several methods to find area and perimeter, depending on the shape of the figure. To find the area of a square or rectangle, use this formula: length x width. To find the perimeter, use this formula: (length x 2) + (width x 2).

How do you calculate the dimensions of a rectangle?

Divide the area by the length if you are given these two figures but not the width. For example, if a rectangle has an area of 20 square feet and a length of 10 feet, divide 20 by 10 to get a width of 2 feet. Multiply the length times 2 and subtract this figure from the perimeter, if you’re given these values.

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How do you calculate area using perimeter?

To calculate the perimeter, you use addition; to calculate the area, you use multiplication. Determine the perimeter of a triangle or rectangle by knowing the length of all of the sides of the figure and then adding these numbers together. The perimeter is the sum of all sides of a figure to get one length.