Question

The length of w rectangle is four times its width. If the perimeter of the rectangle is 90 ft, find its area

Answer 1

Answer:324 ft^2

Explanation:

We can draw a diagram with x being the width and the length is 4x

___4x____

x | | x

___4x____

since we know the perimeter is 90,

4x+x+4x+x=90

10x=90

x=9

so now we found the width, we can find the height

x=9, 4x=36.

To find the area, multiply by length by the width

9*36=324 ft^2