The volume of an expanding sphere is increasing at a rate of 12cubic feet per second. When the volume of the sphere is cubic feet, how fast, in square feet persecond, is the surface area increasing?
Note: ( )
(A) 8
(B) 6
(C) 8π
(E) 10

Can someone show it step by step?
I kind of remember this kind of question, but not sure if I did itright.


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