只知道三棱锥四面体的6条棱长，怎么求体积？外接球与内切球半径的计算，有没有基于棱长的公式？ 知乎 Sketch Coloring Page

只知道三棱锥四面体的6条棱长，怎么求体积？外接球与内切球半径的计算，有没有基于棱长的公式？ 知乎 Template

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tomski只知道三棱锥四面体的6条棱长，怎么求体积？外接球与内切球半径的计算，有没有基于棱长的公式？ 知乎 coloring

正三棱锥的高为1，底面边长为2√6，内有一个球与它的四个面都相切，求：三棱锥的表面积．内切球的半径．百度教育 sketch template

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