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If the radius of a circle is 2 cm and is...

If the radius of a circle is 2 cm and is increasing at the rate of 0.5 cm/sec., then the rate of increase of its area is

A

`pi cm^(2)//sec`

B

`2pi cm^(2)//sec`

C

`3pi cm^(2)//sec`

D

`4pi cm^(2)//sec`

Text Solution

Verified by Experts

The correct Answer is:
B
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