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5)The surface area of a spherical bubble is increasing at the rate of 3 cm2/s. When the radius of the bubble is 8cm, then

5)The surface area of a spherical bubble is increasing at the rate of 3 cm2/s. When the radius of the bubble is 8cm, then the rate by which the volume of the bubble increasing is- (A) 6 cm3/sec (B) 9 cm3/sec (C) 3 cm3/sec (D) 12 cm3/sec

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