Question 983084
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{{{(40ft)(30ft)(14ft)=16800ft^3}}}
The contractor must remove 16800ft^3 of dirt.
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{{{(8yds^3/load)(27ft^3/yd^3)=216ft^3/load}}}
The dump trucks remove 216ft^3 per load
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{{{(16800ft^3)/(216ft^3/load)=77.78loads}}} 
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77.78 loads x $12/load = $933.33
ANSWER: It cost the contractor $933.33 to have the dirt removed.