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Mathematics, 24.08.2019 18:30 stump76

Acontractor digs a hole for the basements of a new house that is 40 feet long and 10 1/2 feet deep. what is the width of the hole if 6,510 cubic feet of dirt are removed?
a.80 feet
b.81 1/4 feet
c.16 feet
d.15 1/2 feet

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