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The radius r of the base of a right circular cone is decreasing at the rate of 2 cm/min. and height h is increasing at the rate of 3 cm/min. When r = 3.5 cm and h = 6 cm, find the rate of change of the volume of the cone. [Use π = 22/7]

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V = (1/3)πr2h

.. . Volume of decreasing at the rate of 49.5 cm2/min.

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