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[几何] 求空心球半径r的最小值，求解题过程

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wdjlhx posted 2014-7-7 22:01 |Read mode

一个半径为r的空心球内装有四个半径均为1cm的实心小球，求空心球半径r的最小值

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其妙 posted 2014-7-7 22:13

那不是正四面体么？

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2025-7-23 09:57 GMT+8

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