Sand falls from a hopper at a rate of 0.1 cubic meters per hour and forms a conical pile

Chapter 0, Problem 95

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Sand falls from a hopper at a rate of 0.1 cubic meters per hour and forms a conical pile beneath. If the side of the cone makes an angle of /6 radians with the vertical, find the rate at which the height of the cone increases. At what rate does the radius of the base increase? Give both answers in terms of h, the height of the pile in meters.

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