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A cone has a depth of 15cm and a base of...

A cone has a depth of 15cm and a base of 6 cm radius. Water is poured into it at the rate of `16/5pi` cc/min.Find the rate at which the level of water in the cone is rising when the depth is 4 cm.

A

`(5)/(4)` cm/min

B

`(5)/(2)` cm/min

C

`(5)/(16)` cm/min

D

`(5)/(8)` cm/min

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The correct Answer is:
A
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