A conical tank (with vertex down) is 14 feet across the top and 20 feet deep. If water is flowing into the tank at a rate of 16 cubic feet per minute, find the rate of change of the depth of the water when the water is 10 feet deep.
?
A. 
ft/min
B. 
ft/min
C. 
ft/min
D. 
ft/min
E. 
ft/min
Answer: D
Mathematics
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