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A sphere of radius 4 meters contains grain with a depth of 7 meters. The grain inside has a density of 5 kilograms per cubic

A sphere of radius 4 meters contains grain with a depth of 7 meters. The grain inside has a density of 5 kilograms per cubic meter. Find the amount of work in Joules required to empty the trough by lifting it to the top of the sphere. Joules

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