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Question
If the volume of a balloon is increasing at the rate of 25 cm3/ sec. then if the radius of the balloon is 5 cm. then the rate of the surface area is:
Options
20 cm2/sec
10 mt2/sec
5 cm2/sec
10 cm/sec
MCQ
Solution
10 cm/sec
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Mensuration - Area and Volume (Entrance Exam)
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