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QUESTION
Sand falls from a conveyor belt at the rate of 9m^3/sec onto the top of a conical pile. The height of the pile is always 3/8 of the base diameter. How fast are the height and the radius changing when
Sand falls from a conveyor belt at the rate of 9m^3/sec onto the top of a conical pile. The height of the pile is always 3/8 of the base diameter. How fast are the height and the radius changing when the pile is 7 m high?
