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A spherical balloon is being inflated so...

A spherical balloon is being inflated so that its volume increase uniformaly at the rate of `40 cm^(3)//"minute"`. The rate of increase in its surface area when the radius is 8 cm, is

A

`10 cm^(2)` minute

B

`20 cm^(2)` minute

C

`40 cm^(2)` minute

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
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