Question

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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please help if you can At a sand & gravel plant, sand is falling off a conveyor and onto a conical... At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at the rate of 10... Sand is falling off a conveyor belt and onto a conical pile at a rate of 12 cubic feet per minute....