Question

The perimeter of a rectangle is 20 feet. The width is 4 feet less than the length. Find the dimensions of the rectangle. Then find its area.

Answer 1

length = 7 ft

width = 3 ft

area = 21 sq ft

Explanation:

let l = length

let l - 4 = width

2l + 2(l - 4) = 20

2l + 2l - 8 = 20

4l = 28

l = 7

w = 3

Area: 7 x 3 = 21