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Water runs into an inverted conical tent...

Water runs into an inverted conical tent at the rate of 20 cu ft/min and leaks out at the rate of 5 cu ft/min. The height of the water is three times the radius of the water's surface. The radius of the water surface is increasing when the radius is 5 ft, is

A

A) `(1)/(5pi)` ft/mi

B

B) `(1)/(10pi)` ft/min

C

C) `(1)/(15pi)` ft/min

D

D) None of these

Text Solution

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The correct Answer is:
A
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