Answer:
length = 20m
width = 16m
(Anyone can correct me if I'm wrong)
Step-by-step explanation:
Firstly, I would assume that you made a unit error for the perimeter, which I would believe is meters.
With that, we can now make these statements:
Perimeter = 72m
Perimeter = 2l + 2w
therefore,
2l + 2w = 72
Since the question states the width is 4 meters less than the length, we can make this statement,
w = l - 4
We can now substitute this into the first statement we made, 2l + 2w = 72
2l + 2(l - 4) = 72
2l + 2l - 8 = 72
4l - 8 = 72
4l = 80
l = 20m
Using the second statement, w = l - 4, we can now find w,
w = 20 - 4
w = 16m
Therefore, the length is 20m and the width is 16m
