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精確的球的表面積計算公式:球的表面積=4πr^2,r為球半徑,公式唯一. 精確的球的體積計算公式:V球=(4/3)πr^3,r為球半徑,公式唯一.
球的體積=4π/3R³ 表面積=體積的導數=4πR²
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