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296 1127redi.. 1 Assume that the radius r of a sphere is expanding at a rate of 50 cm/min. The volume of a sphere is
296 1127redi.. 1 Assume that the radius r of a sphere is expanding at a rate of 50 cm/min. The volume of a sphere is Var' and its surface area is 4ar. Determine the rate at which the surface area is changing with respect to time when r = 40 cm. (Use symbolic notation and fractions where needed.) dA dt cm/min Check P Resources
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