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CBSE XII
>>
Math
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Application of Derivatives
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Q)
A balloon, which always remains spherical on inflation, is being inflated by pumping in
900
cubic centimetres of gas per second. Find the rate at which the radius of the balloon increases when the radius is
15
c
m
.
(
A
)
−
1
π
c
m
/
s
(
B
)
−
1
π
m
2
/
s
(
C
)
−
1
π
m
/
s
(
D
)
1
π
c
m
/
s
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