Carol H. answered • 10/04/17

Masters' Degree in Mathematics with 35 years of Teaching Experience

Let w = the width

Let 2w + 3 = the length

A = lw

54 = w(2w+3)

54 = 2w

^{2}+ 3w2w

^{2}+ 3w - 54 = 0(2w-9)(w+6) = 0

2w - 9 = 0 or w + 6 = 0

2w = 9 or w = -6, illogical answer

2w = 9 or w = -6, illogical answer

w = 4 1/2 feet

Length = 2w + 3 = 2(9/2) + 3 = 9 + 3

length = 12 feet