解题方法
1 . 如图,四棱锥
中,底面ABCD为直角梯形,其中
,
,面
面ABCD,且
,点M在棱AE上.
![](https://img.xkw.com/dksih/QBM/2022/7/17/3024753732354048/3027963739111424/STEM/565d491af4cb4b1787d036dc2d7e1797.png?resizew=232)
(1)若
,求证:
平面BDM.
(2)当
平面MBC时,求点E到平面BDM的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aad38b43462ca7a8fb9bc9484ad3a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4770a1f98495ff85859bc6508d6d5a.png)
![](https://img.xkw.com/dksih/QBM/2022/7/17/3024753732354048/3027963739111424/STEM/565d491af4cb4b1787d036dc2d7e1797.png?resizew=232)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990c2d76db5d7dbb65477fb90bee2aff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a20ea69475dcf57a5ff18c13eceaaa.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
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解题方法
2 . 一个几何体的三视图如图,它们为一个等腰三角形,两个直角三角形,则这个几何体的外接球表面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/e40a233a-1525-4b35-b71a-fa50854cec43.png?resizew=174)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/e40a233a-1525-4b35-b71a-fa50854cec43.png?resizew=174)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-12-05更新
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3卷引用:四川省岳池中学2022-2023学年高三上学期12月月考理科数学试题
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解题方法
3 . 如图,在正四棱柱
中,
,
,
分别为
和
的中点,过
,
,
三点的平面截正四棱柱得一多边形,则该多边形在平面
上的投影图形的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/4f4cf59c-695b-4d44-b66f-3a977949f524.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/4f4cf59c-695b-4d44-b66f-3a977949f524.png?resizew=153)
A.![]() | B.2 | C.![]() | D.3 |
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解题方法
4 . 如图甲,已知正方体
的棱长为
分别是线段
上的动点,当三棱锥
的俯视图如图乙所示时,挖去三棱锥
,得到一个几何体模型(该模型为正方体
挖去三棱锥
后所得的几何体),若利用
打印技术制作该模型,且
打印所用原料密度为
,不考虑打印损耗,制作该模型所需原料的质量为__________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ddbb49c644bf06ccbad885ba2c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0516a9a81529b4f607a564c931c6b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472bb3708238320d1ccaa1f086e35e5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241a67cd3e89dfd3554e4a340afb6a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241a67cd3e89dfd3554e4a340afb6a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ddbb49c644bf06ccbad885ba2c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241a67cd3e89dfd3554e4a340afb6a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e309cb3684f920ada120575a29ca32e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e309cb3684f920ada120575a29ca32e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a7ccf1787508c6a9228e81da98bb76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1508f9d3817f5b3b2ee39cb351fb573.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/2cf51cbb-5ae7-4c49-bebc-9eedb562bbaa.png?resizew=307)
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解题方法
5 . 三棱锥
的外接球为球
,球
的直径
,且
、
都是等边三角形,则三棱锥
的体积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ccdb334598600a35388217d5f9656c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701f3b0e2bedfe5195443459072d798e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701f3b0e2bedfe5195443459072d798e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b49e3e2872fafb719ac7c36c21edd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3cf94278571ee07cad25fa7b7c4f8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ccdb334598600a35388217d5f9656c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 图甲所示的平面五边形
中,
,
,
,
,
,现将图甲所示中的
沿
边折起,使平面
平面
得如图乙所示的四棱锥
.在如图乙所示中.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/358fe606-70e1-4ecc-81c6-99fc3d485376.png?resizew=301)
(1)求证:
平面
.
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1e3a43d0fa18f6c0888ba804d5b329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4e619da064751e750afca7d1244d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5a7b519121b3b785d95f32e5b4fbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6e3e900a2d5c052d719b0d4f823c8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/358fe606-70e1-4ecc-81c6-99fc3d485376.png?resizew=301)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c482ee1668a59ca21f3ae8b6bad58eae.png)
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3卷引用:四川省广安市第二中学校2022-2023学年高二下学期期中考试数学试题(文)
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解题方法
7 . 如图,网格纸上绘制的是一个多面体的三视图,网格小正方形的边长为1,则该多面体的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/23cc584b-c390-44f1-8a95-8b90b8e4fd50.png?resizew=115)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/23cc584b-c390-44f1-8a95-8b90b8e4fd50.png?resizew=115)
A.![]() | B.8 | C.![]() | D.10 |
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2022高三·全国·专题练习
解题方法
8 . 已知三棱锥
的所有顶点都在球
的球面上,
是边长为2的正三角形,
为球
的直径,且
,则此棱锥的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f7e633fb547fd821e5a3cbf1bd1f48.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7卷引用:四川省广安市2022-2023学年高二上学期期末数学(理)试题
四川省广安市2022-2023学年高二上学期期末数学(理)试题(已下线)专题20 玩转外接球、内切球、棱切球-2(已下线)7.2 空间几何的体积与表面积(精讲)四川省遂宁市2022-2023学年高二上学期期末数学(理科)试题宁夏吴忠市2023届高三下学期一轮联考数学(文)试题(已下线)微专题10 玩转外接球、内切球、棱切球经典问题(1)-【微专题】2022-2023学年高一数学常考点微专题提分精练(人教A版2019必修第二册)(已下线)专题13 一网打尽外接球、内切球与棱切球问题 (14大核心考点)(讲义)
解题方法
9 . 若正三棱柱
既有外接球,又有内切球,记该三棱柱的内切球和外接球的半径分别为
、
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f20f21a9d50b61dac519a3ddab539d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4524f95b6f1d1c44aed5308629c756ff.png)
A.![]() | B.5 | C.![]() | D.![]() |
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10 . 如图,平面四边形
中,
,
,
,
,现将
沿
翻折,使点D移动至点P,且
,则三棱锥
的外接球的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/e3ac5de5-2154-40ea-8e62-618ea15d7e51.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab96c482366c0fc2b5384698599c17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0063f3f48e49f2970ec7f097567cef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/e3ac5de5-2154-40ea-8e62-618ea15d7e51.png?resizew=167)
A.![]() | B.![]() | C.![]() | D.![]() |
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