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The radius of the base and depth of a co...

The radius of the base and depth of a conical funnel are 20 cm and 40 cm repectively. Water flows from the funnel at the rate 2.25 cm/sec. The rate at which the water level decreases when altitude is 30 cm is

A

`5/(8pi)` cm/sec

B

`1/(100pi)` cm/sec

C

`5/(12pi)` cm/sec

D

`1/(120pi)` cm/sec

Text Solution

Verified by Experts

The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-APPLICATIONS OF DIFFERENTIATION-EXERCISE 1C (RATE OF CHANGE)
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