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July 23, 2014

Homework Help: calculus

Posted by peter on Thursday, March 15, 2012 at 5:04pm.

At a quarry, sand is filling off a conveyor onto a conical pile at a rate of 15 cubic feet per minute. The diameter of the base of the cone is four times the height. At what rate is the height of the pile changing when the pile is 12 feet high?

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