The length of the rectangle is twice its width. Find the perimeter of the rectangle if its length is 36cm.
March 4, 2021 | education
| It is known from the condition that the length of the rectangle is 2 times the width. We need to find the perimeter of a rectangle if its length is 36 cm.
Let’s start by finding the width of the rectangle. We know that the length is 2 times the width.
This means that the width is 2 times less than the length. We calculate the width:
36 cm: 2 = 18 cm rectangle width.
We just have to remember the formula for finding the perimeter of a rectangle and apply it.
P = 2 (a + b), where a and b are the length and width of the rectangle.
P = 2 (36 + 18) = 2 * 54 = 108 cm perimeter of the rectangle.
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