Finding V's Rate of Change for h = 0.60cm

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Hi, I had a question that wanted me to find the instantaneous rate of change of V with respect to h for h = 0.60cm. The equation was V = 1/6*pi*h^3 + 2.00*pi*h and I retrieved an answer of 6.85 cm/s. Could anyone tell me if that is correct? Thanks.
 
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The derivative of V with respect to h and then plug in .6 cm...

looks correct to me
 
To two decimal places, yes. In future it would be better to show your work rather than just the answer.
 

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