Question

The length of a rectangle is 3 inches more than its width. The perimeter of the rectangle is 30 inches. What is the length of the rectangle?

Answer 1

9 inches

Explanation:

l = length

w = width

l = w + 3

the perimeter is the way one time fully around the rectangle. 2 times the length plus 2 times the width.

30 = 2×l + 2×w = 2×(w+3) + 2×w = 2w + 6 + 2w = 4w + 6

24 = 4w

w = 6 in

l = w + 3 = 6 + 3 = 9 in