Question: The radius of a right circular cone is increasing at a rate of 1.8 in/s while its height is decreasing at a rate of 2.5

The radius of a right circular cone is increasing at a rate of 1.8 in/s while its height is decreasing at a rate of 2.5 in/s. At what rate is the volume of the cone changing when the radius is 120 in. and the height is 140 in.?

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