Question

Colin is buying dirt to fill a garden bed that is a 9 ft by 16 ft rectangle. If he wants to fill it to a depth of 4 in., how many cubic yards of dirt does he need?
If dirt costs $25 per yd3, how much will the project cost? (Hint: 1 yd3 = 27 ft3)

Answer 1

in feet, the dirt is

(9)(16)(1/3) = 48 ft^3

so, just divide that by 27 and multiply by the cost per cubic yard of dirt.

Answer 2

44.4