The surface area, S, of a sphere of radius r feet is S = S (r) = 4πr2. Find the instantaneous rate of change of the surface area with respect to the radius r at r = 4.
a. 32pi
b. 16pi
c. 64pi
d. 4pi
+4
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Home » Mathematics » The surface area, S, of a sphere of radius r feet is S = S (r) = 4πr2. Find the instantaneous rate of change of the surface area with respect to the radius r at r = 4. a. 32pi b. 16pi c. 64pi d. 4pi