Question

Siobhan wants to have a beach party in January. Her parents said she can use the garage, which is 36 feet long and 20 feet wide. If she wants to cover the floor with 2 inches of sand, how much sand does she need?

120 cubic feet
720 cubic feet
1440 cubic feet
4320 cubic feet

Answer 1

Area of the garage:
A = L x W = 36 x 20 = 720 ft².
Siobhan wants to cover the floor with the 2 inches of sand. It means:
h = 2 in
1 ft = 12 in
1 in = 1 : 12 = 0.0833 ft
h = 2 · 0.0833 = 0.166 ft
V = A · h = 720 · 0.166 ≈ 120 ft²
Answer: A ) 120 cubic feet.