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A spherical balloon is being inflated at...

A spherical balloon is being inflated at the rate of 35 `cm^(3)`/min. Then the rate of increase of the surface area (in `cm^(2)`/min) of the balloon when its diameter is 14 cm, is -

A

7

B

10

C

17.5

D

28

Text Solution

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The correct Answer is:
B
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CHHAYA PUBLICATION-MCQ ZONE 3 -Question Paper 8
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  8. If g(x)=min(x, x^(2)) where x is a real number then -

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  15. The radius of a circular plate is increasing at the rate of 0.01 cm/s ...

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  16. A spherical balloon is being inflated at the rate of 35 cm^(3)/min. Th...

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  17. Electric current C, measured by a galvanometer, is given by the equati...

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  18. The value of Var (4x+3) is

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