Answer:
Length is 18 meters and width is 14 meters
Step-by-step explanation:
You can solve for the length by using the perimeter formula.
P = 2l + 2w.
You know P = 72. You also know the length is l and the width is w = l - 4.
72 = 2l + 2(l - 4)
72 = 2l + 2l - 8
72 = 4l - 8
72 = 4l
18 = l
This means the width which is 4 meters less is 18 - 4 = 14.