An area has been laid out as shown in the accompanying illustration. The elevations of the corners are indicated on the sketch. Determine how many cubic yards of cut are required to grade the area level to elevation 90.0, neglecting the shrinkage factor.

An area has been laid out as shown in the accompanying illustration. The elevations of the corners are indicated on the sketch. Determine how many cubic yards of cut are required to grade the area level to elevation 90.0, neglecting the shrinkage factor.

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