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Math Help - related rates of change

  1. #1
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    related rates of change

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  2. #2
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    What are the formulas for the surface area A and volume V of a sphere with radius r?

    You are given that dA/dt = 8. You are asked to find dV/dt when A = 60.

    Differentiate the area formula, plug in the known value, and solve for dr/dt.

    Differentiate the volume formula, plug in the known values, and solve for dV/dt.

    If you get stuck, please reply showing your steps so far. Thank you!
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