The area of a rectangular wall of a barn is 160 square feet. Its length is 12 feet longer than the width. Find the length and width of the wall of the barn.

Question

Find the length and the width

Answer 1

L = W + 12

 

LW = A

 

(W + 12)W = 160

 

W² + 12W - 160 = 0

 

(W - 8)(W + 20) = 0

 

W = 8 ft

L = W + 12 = (8 + 12) ft = 20 ft