[ANSWERED] A foundation excavation is to be dug on the sloping site shown in Figure 13-5. How many cubic yards.

A foundation excavation is to be dug on the sloping site
shown in Figure 13-5. How many cubic yards of earth must be removed? There are
27 cubic feet in a cubic yard. (Hint: Divide the cross section of the
excavation into a rectangle and a triangle.) Round the answer to 1 decimal
place.
Figure 13-5