Question

The length of a rectangle is four times its width,

If the area of the rectangle is 100 in ^2”, find its perimeter

Answer 1

The area of the rectangle = length × breadth

Letting the width = x m

Then, length = 4x m

A = l × b = 100 m²

4x × x = 100 m²

x² = 100/4 m²; then removing the squares

x = 10/2 m

x = 5 m = width

Length = 20 m

Explanation:

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