



 
Tyler, There are 3 feet in a yard so there are 3 3 3 = 27 cubic feet in a cubic yard. Thus the topsoil costs
Since the depth is 18 inches (1.5 feet) a "block" of soil that is 1 foot by 1 foot on the surface is
Thus to cover a region to a depth of 18 inches will cost
Penny  


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