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A ballon is in the shape of a cone surmo...

A ballon is in the shape of a cone surmounted by a semi sphere. The radius of a sphere is equal to the height of the cone. If the height of the ballon is 2 then the rate of change in its volume is ……..times the rate of change in its height.

A

`4pi`

B

`6pi`

C

`12pi`

D

`8pi`

Text Solution

Verified by Experts

The correct Answer is:
C
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