AMU Engineering 2020 solved paper Solved Paper

Section: Mathematics

Question : 141 of 150

Marks: +1, -0

- Gas is being pumped into a spherical balloon at the rate of 30ft3∕min. Then, the rate at which the radius increases when it reaches the value 15ft, is

‌
1
30π
ft∕min
‌
1
15π
ft∕min
‌
1
20
ft∕min
‌
1
25
ft∕min

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