The area of a rectangle is 480 in^2 . The length is 4 more than width. Find each measurement.

Answer 1

A= LW = (4+W)W = 4W + W^2 = 480

W^2 + 4W = 480

W^2 + 4W + 4 = 480+4

(W+2)^2 = 484 = 22^2

W+2 = + or - 22

W = -2+22 = 20 inches

L=24 inches

20x24 = 480 square inches