How many yards of sand do you need 10 fill a 10 ft x 15 ft x 8 inch deep sand box?

Answer 1

A "yard" of sand really means a cubic yard (in other words, the equivalent of a cube that is 3 feet on each side). Thus a cubic yard has a volume of 3 x 3 x 3 = 27 cubic feet. The sandbox is 10 x 15 x 2/3 feet = 100 cubic feet. (The figure of 2/3 is because 8 inches = 2/3 of a foot. It's the same as simplifying the fraction 8/12).

You need 100 cubic feet. There are 27 cubic feet in a cubic yard. Therefore, you need 100/27 = 3.7 yards.