Gold ring
A gold ring with a width of 1 cm is made by drilling a sphere with a radius of 1 cm through its center. A gold bracelet with a width of 1 cm is made by drilling a sphere with a radius of 4 cm through its center. Which piece of jewelry will be worth more if we only consider the amount of precious metal?
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You need to know the following knowledge to solve this word math problem:
arithmeticsolid geometrybasic operations and conceptsUnits of physical quantitiesGrade of the word problem
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