Find the partial derivative

Question

Find the partial derivative of V = straight pi r2 h with respect to r. Give your answer in terms of a numerical value, using r = 31.1 and h = 27.1. Do not use scientific notation or include units.

Answer 1

What do you mean by "straight"?  I assume the problem is to find the partial derivative of V with respect to r, with V given by

 

V = πr²h

 

∂V/∂r = 2πrh = 2π(31.1)(27.1) = 5295.5