You want to put a 6-inch thick layer of topsoil for a new 31 feet by 17 feet garden.

Question

The dirt store only sells topsoil by the cubic yard. How many cubic yards of topsoil will you need to order to fill this garden?

Answer 1

31 x 17 x 1/2 = 527/2= 263.5 ft^3

1 yd^3 = = 3^3 = 27 ft^3 = 12^3 in^3 = 1728 in^3

263.5/27 = about 9 3/4 cubic yards

You should buy 10 yd^3