Question

The length of a rectangle is 5 ft longer than its width.

If the perimeter of the rectangle is 42 ft, find its area.

Answer 1

Explanation:

L = w + 5

P = 2(L+w) = 42

L + w = 21

w+5 + w = 21

2w + 5 = 21

2w = 16

w = 8 ft

L = w+5 = 13 ft.

Rectangle is 13 ft by 8 ft

Area = 13(8) = 104 ft2