解题方法
1 . 直观想象是数学六大核心素养之一,某位教师为了培养学生的直观想象能力,在课堂上提出了这样问题:棱长为
的正四面体盒子中,最多能放
个半径为2小球,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d2a287e07e4f11c94f0ee4fc53f9dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.9 | B.10 | C.11 | D.12 |
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名校
2 . 在棱长为
的正方体
中,点
,
,
,
分别为线段
,
,
,
的中点,点
为线段
的动点,则下列说法正确的是___________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/7a010049-e6eb-4642-bce4-aa68a11da773.png?resizew=169)
①异面直线
与
所成角的余弦值为
;②当
为线段
的中点时,点
,
,
,
四点共面:③对任意点的点
,都有平面
平面
;④三棱锥
的外接球的表面积为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/7a010049-e6eb-4642-bce4-aa68a11da773.png?resizew=169)
①异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63174f7275c3804fc430c7c36a5ab265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc8dc257bf555c87fd0ad0800e5084b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45160df4f6acbb62c862978ccc779d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3da9085d439248fee8e3ea2d87741a.png)
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解题方法
3 . 已知三棱锥
中,
,
,
两两互相垂直,且
,
,
,若三棱锥
的所有顶点都在球
的表面上,则球
的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
921次组卷
|
2卷引用:四川省达州市普通高中2024届第一次诊断性测试数学(文科)试题
解题方法
4 . 在三棱锥
中,
,
,
,
,则三棱锥
外接球的体积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248e936709c88ad0f6072640932154d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91d5a57d368261e7a0a61d8386459eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e52850ccf6784047f4c1867093b1c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
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2023-12-14更新
|
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3卷引用:四川省成都市经济技术开发区实验中学校2024届高三上学期12月月考数学(文)试题
四川省成都市经济技术开发区实验中学校2024届高三上学期12月月考数学(文)试题四川省成都市教育科学研究院附属实验中学2024届高三一模适应性考试数学(理)试题(已下线)2024年高考数学全真模拟卷01
解题方法
5 . 如图,某圆台形台灯灯罩的上、下底面圆的半径分别为3cm,4cm,高为7cm,则该灯罩外接球的体积为___________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/29881c7f-1943-45ba-9b56-741dbf3704df.png?resizew=124)
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解题方法
6 . 如图,棱长为2的正方体
中,点P在线段
上运动,以下四个命题:①三棱锥
的体积为定值;②
;③若
,则三棱锥
的外接球半径为
;④
的最小值为
.其中真命题有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/1e2bf855-36cb-411e-83f0-a96d5556cab4.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a80afb14665ad9cb3587c5364980e30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763be97fe1e030b5509bda231a546001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c83728b4b91893fa14e7b84dcc3d1f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8571fe486121ccf36f6be04dbb2295c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e102741bc350e8ccbc6d1405b44972d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed728f911042364c77b78b597aafd344.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/1e2bf855-36cb-411e-83f0-a96d5556cab4.png?resizew=160)
A.①②③ | B.①②④ | C.①②③④ | D.③④ |
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2023-12-14更新
|
501次组卷
|
3卷引用:四川省成都市石室中学2024届高三一模数学(理)试题
解题方法
7 . 高为5的圆锥的顶点和底面圆都在球
的表面上,若球
的体积为
,则这个圆锥的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f0fbe64630fbe695d5489932e7f952.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
8 . 已知四棱锥
中,底面四边形
为正方形,侧面
为正三角形,且侧面
垂直底面
,若
,则该四棱锥外接球的表面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cd5c4f8b106d01e0e431078e1a468b.png)
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解题方法
9 . 《九章算术》是西汉张苍等辑撰的一部数学巨著,被誉为人类数学史上的“算经之首”.书中“商功”一节记录了一种特殊的锥体,称为鳖臑 (biēnào). 如图所示,三棱锥
中,
平面
,则该三棱锥即为鳖臑. 若
且三棱锥外接球的体积为
,则三棱锥
体积的最大值是__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80916feefad4fb91109acf6cdcc2801a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9c176877b59cd7c34fcc0838b05493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/7c987b5d-5218-4fb7-baa7-ba7f57ef2a03.png?resizew=148)
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2023-12-08更新
|
315次组卷
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3卷引用:四川省达州市第一中学校2023-2024学年高二上学期第二次月考数学试题
四川省达州市第一中学校2023-2024学年高二上学期第二次月考数学试题(已下线)第八章 立体几何初步(一)(知识归纳+题型突破)(2)-单元速记·巧练(人教A版2019必修第二册)云南省红河哈尼族彝族自治州蒙自市第一高级中学2023-2024学年高二下学期5月期中数学试题
名校
解题方法
10 . 设三棱锥
的三条侧棱SA,SB,SC两两相互垂直,
,
,
,其顶点都在球O的球面上,则球心O到平面ABC的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e39bee1445161f91213c83b498b8ec.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:四川省内江市威远县威远中学校2023-2024学年高二上学期第二次月考(期中考试)数学试卷
四川省内江市威远县威远中学校2023-2024学年高二上学期第二次月考(期中考试)数学试卷广东省湛江市第二十一中学2023-2024学年高二上学期10月月考数学试题(已下线)第三篇 努力 “争取”考点 专题6 空间角与距离【练】湖北省武汉市问津教育联合体2023-2024学年高二下学期3月联考数学试卷