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QUESTION
a 100-foot-long cable of diameter 4 inches is submerged in seawater. because of corrosion, the surface area of the cable decreases at a rate of 750...
a 100-foot-long cable of diameter 4 inches is submerged in seawater. because of corrosion, the surface area of the cable decreases at a rate of 750 in.^2/year. ignoring the corrosion at the ends of the cable, find the rate at which the diameter is decreasing.
