How many feet of stone will Lorenzo need?

Question

Lorenzo built a rectangle brick patio. He is putting a stone border around the edge of the patio. The width of the patio is 12 feet. The length of the patio is two feet longer than the width. How many feet of stone will Lorenzo need ?

Answer 1

P_rec = 2l + 2w

l = w + 2

w = 12

Thus:

l = 2 + 12

l = 14

 

P = 2 * 14 + 2 * 12

P = 28 + 24

P = 52

 

Lorenzo is going to need 52 feet of stone.