The basic formula for the perimeter of a rectangle is: P = 2 x (l + w). We know that the area is 96 square feet and the width is 4 feet less then the height.
Since the width is 4 feet less than the length that means 4 + 4 = l 4 + 4 = 8. 8 is the length.
Now we have
w = 4 l = 8
Solve
P = 2 x (l + w) P = 2 x (8 + 4) P = 2 x (16 + 8) P = 24
