You want to put a 6 inch thick layer of topsoil for a new 12 ft by 22 ft garden. The dirt store sells by the cubic yard. How many cubic yards will you need to order?

Answer 1

12x22x1/2 = 132 ft^3

132 ft^3 = 132/3^3 = 132/27 =

44/9 = 4 8/9 =4.888... cubic yards

you'll need to order 5 yd^3

you'll have 1/9 yd^3= 27/9= 3 ft^3 left over

6 inches = 1/2 foot

1 cubic yard = 3^3 = 27 cubic feet