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If the time rate of change of the radius...

If the time rate of change of the radius of a sphere is `(1)/(2pi)`, then the rate of change of its surface area(in square cm), when the radius is 5 cm , is-

A

20

B

10

C

4

D

5

Text Solution

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The correct Answer is:
A
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CHHAYA PUBLICATION-MCQ ZONE 3 -Question Paper 2
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