The length of a rectangle is four times its width, If the area of the rectangle is 100 in ^2”, find its perimeter

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

Step-by-step explanation:

Hope it is helpful

b is the final answer! : )