Multiple Choice
The volume of a right-circular cylinder of radius r and height h is
. Suppose the radius and height of the cylinder are changing with respect to time t. At a certain instant of time, the radius and height of the cylinder are 8 and 2 in. and are increasing at the rate of 0.5 and 0.2 in./sec, respectively. How fast is the volume of the cylinder increasing?
A) 
B) 
C) 
D) 
Correct Answer:
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