The length of a rectangle is 4cm greater than It’s width. If the area of the rectangle is 108 cm

Question

The length of a rectangle is 4cm greater than It’s width. If the area of the rectangle is 108 cm², what are the approximate dimensions of the rectangle?

Answer 1

Let L = length and W = width...and A = area = L*W

L=W+4

(W+4)W = 108

W² + 4W - 108=0

Approximate root (by quadratic formula) is 8.5