CAL

(1 pt) A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number).

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asked by lan
  1. V = (4/3) pi r^3
    so
    dV/dt = 4 pi r^2 dr/dt

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    posted by Damon

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