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31 October, 11:22

The radius of a right circular cone is increasing at a rate of 3 inches per second and its height is decreasing at a rate of 5 inches per second. At what rate is the volume of the cone changing when the radius is 10 inches and the height is 50 inches? NOTE: The volume of a cone with base radius r and height h is given by V=13πr2h.

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  1. 31 October, 11:43
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    Volume=

    3.14 (pi) * 10 inch base 2 (10*10)

    3.14 * 100=314 * 50 (height)

    Answer:15700 inches cube (3)
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