Solve the problem.The volume V of a right circular cylinder of height 2 and radius r is V(r) = 2?r2. Find the instantaneous rate of change of volume with respect to radius r when r = 7.

A. 32? ft3/ft
B. 28? ft3/ft
C. 98? ft3/ft
D. 23? ft3/ft


Answer: B

Mathematics

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