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A sphere of 10cm radius has a uniform th...

A sphere of 10cm radius has a uniform thickness of ice around it. Ice is melting at rate `50 cm^3//min` when thickness is 5cm then rate of change of thickness

A

`5/(6pi)`

B

`1/(36pi)`

C

`1/(18pi)`

D

`1/(54pi)`

Text Solution

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The correct Answer is:
C
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