a backyard has a perimeter of 144 meters. if the backyard is a rectangle and the length is three times the width what are the dimsions of the backyard?

Question

I have to make an equation any help would be apreciated.

Answer 1

L=3W

2L + 2W = 144

L+W = 144/2 = 72

3W + W = 72

4W = 72

W = 72/4 = 18 meters wide

L=3W = 3(18) = 54 meters long