Question

The length of a rectangle is three times its width. If the area of the rectangle is 243 m squared, find it’s perimeter

Answer 1

Answer: 72

Explanation:

L= 3W

area of a rectangle A= LxW

replace L with 3 W

A=3W*W= 3w^2

243=3W^2

243/3=W^2

81=w^2, and W=9

L=3*9=27

P= (L+W)=2(27+9)=72