I need help with this

Question

A garden is in the shape of a square with a perimeter of 40

feet. The garden is surrounded by two fences. One fence is around the perimeter of the garden, whereas the second fence is 2

feet from the first fence on the outside. If the material used to build the two fences is $1.27

per foot, what was the total cost of the fences?

Answer 1

Since the garden is square-shaped, one side is 40/4 = 10 ft.

Inner fence: Each side = 10ft

Outer fence: Each side = (10+2*2) = 14ft

Outer fence perimeter = 14*4 = 56ft

Total fence length = 40+56 = 96ft

Total cost = 96*1.27 = $121.92