Question: need help to solve please see attached A hemisphere-shaped dome of radius 75 ft is to be coated with a layer of rust-proofer before painting.

need help to solve please see attached

A hemisphere-shaped dome of radius 75 ft is to be coated with a layer of rust-proofer before painting. Use differentials to 3 estimate the amount of rust-proofer needed if the coat is to be 0.01 in. thick. [Round your answer to two decimal places.) Hint: The volume of a hemisphere of radius r is V = Hr
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