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(10 points) A spherical balloon is inflated so that its volume is increasing at the rate of 20 cubic cm per second. What is

(10 points) A spherical balloon is inflated so that its volume is increasing at the rate of 20 cubic cm per second. What is the instantaneous change in surface ds area, of the balloon increasing when the radius is dt' 4 40 cm? [Use V Tr and S=4r.] 3

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