Question

The length of a rectangular patio is three times its width. The area of the patio is 432 square feet. What is the length, in feet, of the patio?

Answer 1

l = 3w

A = lw = (3w)w = 432

3w² = 432

w² = 144

w = 12, so l = 36

The length is 36 feet, and the width is 12 feet.