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标题: Find the size of the cube [打印本页]

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作者: yma16    时间: 2007-3-3 18:01
标题: Find the size of the cube

that is inscribed in a unit regular tetrahedron (pyramid).

www.ddhw.com

 

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作者: yma16    时间: 2007-3-3 21:26
标题: an old question that I posted is here

http://www.topchinesenews.com/readpost.aspx?topic_id=9&msg_id=5349&level_string=0 www.ddhw.com

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作者: salmonfish    时间: 2007-3-6 02:16
标题: [:)][:)]（图）

内嵌球的半径是：(L is the edge length of the tetrahedron)   www.ddhw.com

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作者: yinyin    时间: 2007-3-8 05:49
标题: 回复：Find the size of the cube

The length of each side is (15x30.5-18)/26=0.306952389...... www.ddhw.com

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