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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 uniform thickness that melts at a rate of 50 `cm^(3)//min`. When the thickness of ice is 5 cm, then find the rate at which the thickness of ice decreases.

A

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

B

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

C

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

D

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

Text Solution

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The correct Answer is:
B
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