10．已知正四面体内接于半径为r的球用一平面去截此正四面体和球其截面如图则球心到截面的距离为 A． B． C． D．——青夏教育精英家教�—— Sketch Coloring Page

10．已知正四面体内接于半径为r的球用一平面去截此正四面体和球其截面如图则球心到截面的距离为 A． B． C． D．——青夏教育精英家教�—— Template

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sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )

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sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )

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sketch #3448 Treba mi bolji "mish " ;)

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tomski10．已知正四面体内接于半径为r的球用一平面去截此正四面体和球其截面如图则球心到截面的距离为 a． b． coloring

正四面体ABCD内接于半径为R的球O（即四个顶点在球面上），其内切球半径为r，（1）证明R＝3r （2）用R表百度知道 sketch template

10．已知正四面体内接于半径为R的球用一平面去截此正四面体和球其截面如图则球心到截面的距离为 A． B． C． D．——青夏教育精英家教�—— sketch template

深入浅出数学系列立体几何（4）：球的切接问题（上）知乎 sketch template

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分子点群的归属（2）对称性高的点群化学空间 Chem Station sketch template

正四棱锥的顶点都在同一球面上若该棱锥的高为4底面边长为2则该球的表面积为A．B．C．D．题目和参考答案——青夏教育精英家教�—— sketch template

求棱长为a的正四面体的外接球和内切球的半径 解析如图作AH⊥底面BCD于H则AH＝a设内切球的球心为O半径为rO点与ABC sketch template

和球相关的正方体和正四面体 Word文档在线阅读与下载无忧文档 sketch template

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81 基本立体图形2 圆柱、圆锥、圆台、球 湛江贵哥讲数学博客园 sketch template

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已知半径为3的球内有一个内接正方体即正方体的顶点都在球面上．1求此球的体积2求此球的内接正方体的体积3求此球的表面积与其内 sketch template

已知正三角形ABC的三个顶点都在半径为2的球面上，球心O到平面ABC的距离为1，E是线段AB的中点，过点E作球O的截面，则A三棱锥O sketch template

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已知球的直径为10cm求它的内接圆锥体积的最大值并求出此时圆锥的底面半径和高．题目和参考答案——青夏教育精英家教�—— sketch template

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16．如图棱长为3的正三棱柱内接于球O中则球O的表面积为 ——青夏教育精英家教�—— sketch template

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正多边形的画法步骤图 数学英才学习� sketch template

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如图正三棱锥ABCD内接于球O底面边长为3侧棱长为2则球O的表面积为 A64π3B32π3C16π3D8π3 题目和参考 sketch template

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10．将半径为4cm的半圆围成一个圆锥在圆锥内接一个圆柱当圆柱的侧面的面积最大时圆柱的底面半径是 Cm 第9题图 第10题图——青夏 sketch template

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12．轴截面是正方形的圆柱叫等边圆柱．已知等边圆柱的底面半径为r求全面积 13．如图圆锥形封闭容器高为h圆——青夏教育精英家教�—— sketch template

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把四个半径都是1的球中的三个放在桌面上使它两两外切然后在它们上面放上第四个球使它与前三个都相切求第四个球的最高点与桌面的距离．题目和 sketch template

百度教育 sketch template

已知在半径为2的⊙O中圆内接 ABC的边AB=23则∠C的度数为 A．60°B．30°C．60°或120°D．30°或150° 题目和 sketch template

已知正四面体ABCD的棱长为1求1该四面体的内切球的表面积2与该四面体各条棱均相切的球的体积3该四面体的外接球上AB两点间 sketch template

半径为R的圆的内接正n边形的面积等于．题目和参考答案——青夏教育精英家教�—— sketch template

已知圆的半径为求圆内等边三角形的边长百度教育 sketch template

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