The iron roller
The iron roller has a base circumference of 28 π cm. The worker drilled a hole through the top of the roller. After drilling, the given product had a 35% smaller volume than before. The hole's circumference in the base is equal to the height of the roller.
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algebraarithmeticsolid geometryplanimetrybasic operations and conceptsUnits of physical quantitiesGrade of the word problem
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