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A spherical iron ball 10 cm in radius is...

A spherical iron ball 10 cm in radius is coated with a layer of ice of unirform thichness that melts at a rate of `50cm^3`/min. when the thickness of ice is 5 cm, then the rate at which the thickness of ice decreases, is

A

`(1)/( 54 pi ) cm// min`

B

` ( 5)/( 6 pi) cm // min`

C

`(1)/(36 pi) cm // min`

D

` (1)/(18 pi ) cm // min`

Text Solution

Verified by Experts

The correct Answer is:
D
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