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A -gallon oil drum has a surface area of square cm.

a. Write the volume of the oil drum in terms of only, by substituting from the surface area.

b. Find the derivative of the volume with respect to the radius.

c. Find the radius that maximizes the volume. Round to the nearest tenth and write with units.

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Darlyn Diaz
Darlyn DiazLv5
18 Jan 2021

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