名校
解题方法
1 . 某几何体的三视图如图所示,正视图和侧视图都是腰长为1的等腰直角三角形,则该几何体的体积等于( )
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647169320935424/2649294980186112/STEM/dde80853196345358ca75776a66ec3b6.png?resizew=152)
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647169320935424/2649294980186112/STEM/dde80853196345358ca75776a66ec3b6.png?resizew=152)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:安徽省合肥一中、六中、八中2020-2021学年高二上学期期末理科数学试题
解题方法
2 . 如图1,边长为4的正方形
中,点E,F分别是边
,
的中点,将
,
分别沿
,
折起,使A,C两点重合于点P如图2.设
与
交于点O.
![](https://img.xkw.com/dksih/QBM/2021/1/27/2645223176323072/2646094153474048/STEM/d2353ffd88db4d039cadd9b08e033124.png?resizew=348)
(1)求证:
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/c771a4feb150ad9cff8d70431c97eb17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13668f033d00acfc366f7e47949c4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2021/1/27/2645223176323072/2646094153474048/STEM/d2353ffd88db4d039cadd9b08e033124.png?resizew=348)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357f2bfe607af1cdef85dfc603e3192f.png)
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名校
解题方法
3 . 阿基米德(
,公元前287年—公元前212年)是古希腊伟大的数学家、物理学家和天文学家.他推导出的结论“圆柱内切球体的体积是圆柱体积的三分之二,并且球的表面积也是圆柱表面积的三分之二”是其毕生最满意的数学发现,后人按照他生前的要求,在他的墓碑上刻着一个圆柱容器里放了一个球(如图所示),该球与圆柱的两个底面及侧面均相切,圆柱的底面直径与高都等于球的直径,若球的体积为
,则圆柱的体积为 ( )
![](https://img.xkw.com/dksih/QBM/2021/1/25/2643924816936960/2645720142479360/STEM/65c591eb-9bd7-44e8-af67-23ef05bb71aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee15c5a50d8112b8b6e879822c953add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4d9a7c9b2ee0253a3a11d5117f9f49.png)
![](https://img.xkw.com/dksih/QBM/2021/1/25/2643924816936960/2645720142479360/STEM/65c591eb-9bd7-44e8-af67-23ef05bb71aa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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16卷引用:安徽省蚌埠市2020-2021学年高二上学期期末文科数学试题
安徽省蚌埠市2020-2021学年高二上学期期末文科数学试题安徽省六安中学2020-2021学年高三上学期开学考试数学(文)试题江苏省徐州市2019-2020学年高一下学期期末数学试题(已下线)对点练43 空间几何体的表面积与体积-2020-2021年新高考高中数学一轮复习对点练2021届高三高考必杀技之信息阅读题--类型5 立体几何与空间结构河北省实验中学2021届高三上学期期中数学试题(已下线)专题16 立体几何问题——2020年高考数学母题题源解密(山东、海南专版)(已下线)8.6 第八章 《立体几何初步》 综合测试卷--2020--2021高中数学新教材配套提升训练(人教A版必修第二册)(已下线)专题11.1空间几何体(B卷提升篇)-2020-2021学年高一数学必修第四册同步单元AB卷(新教材人教B版)江苏省镇江市丹阳高级中学2020-2021学年高一(1-16班,20班)下学期5月大练数学试题重庆市缙云教育联盟2022届高三上学期9月月度质量检测数学试题(已下线)第八章 立体几何初步单元自测卷(二)宁夏六盘山高级中学2022-2023学年高一下学期期末测试数学试题广东省深圳市龙华中学2022-2023学年高一下学期期中数学试题山东省烟台栖霞市第一中学2022-2023学年高一下学期6月月考数学试题(已下线)高一下期末真题精选(基础60题60个考点专练)
名校
4 . 由8个面围成的几何体,每一个面都是正三角形,并且有4个顶点A,B,C,D在同一个平面内,且四边形ABCD是边长为30cm的正方形,则该几何体的体积为( )cm3.
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 《九章算术》中,将底面是直角三角形的直三棱柱称之为“堑堵”,已知某“堑堵”的三视图如图所示,则该“堑堵”的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/6ead860a-6d73-4069-bc75-5aa514c2be84.png?resizew=129)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/6ead860a-6d73-4069-bc75-5aa514c2be84.png?resizew=129)
A.4 | B.6 | C.12 | D.24 |
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2卷引用:安徽省皖北名校2020-2021学年高二上学期期末数学(文)试题
6 . 如图,矩形
中,对角线
、
的交点为G,
平面
,
,
,F为
上的点,且
.
![](https://img.xkw.com/dksih/QBM/2021/1/6/2630286467481600/2633041986543616/STEM/873e0286-d1fa-4088-a36a-a35586c6f9f2.png?resizew=241)
(I)求证:平面
平面
;
(II)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29f27c9a3af7044faf147bdaeb3fe81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b3581f73c778ecb0931c1ab30392ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbfc35fc915ac7d4dc017e60ccdecbe.png)
![](https://img.xkw.com/dksih/QBM/2021/1/6/2630286467481600/2633041986543616/STEM/873e0286-d1fa-4088-a36a-a35586c6f9f2.png?resizew=241)
(I)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc6db50a9709c3f4d84eee7bdf1250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(II)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26e25ee66687503e95362f2cad5b2ac.png)
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名校
7 . 已知四边形
为矩形,
,平面
平面
,
,若四棱锥
外接球的表面积为
,则四棱锥
体积的最大值为_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.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/d0453cfd7e92bf7746a88280b9e7b580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95345846d2dd4dfa042a9093c62a8b82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
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6卷引用:安徽省淮南一中2020-2021学年高二下学期开学考理科数学试题
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8 . 若竖直放置的圆锥的正视图是一个面积为
的直角三角形,则该圆锥的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7卷引用:安徽省淮南一中2020-2021学年高二下学期开学考文科数学试题
名校
9 . 中国古代数学专著《九章算术》中对两类空间几何体有这样的记载:①“堑堵”,即底面为直角三角形,且侧棱垂直于底面的三棱柱;②“阳马”,即底面为矩形,且有一侧棱垂直于底面的四棱锥.现有一“堑堵”
,如图所示,
,
,
,则其中“阳马”
与三棱锥
的体积之比为( )
![](https://img.xkw.com/dksih/QBM/2020/12/24/2621025203634176/2626876898041856/STEM/967e0196-91b4-43e3-9008-09486af3f9e3.png?resizew=270)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a0c82028e1259f300facd32775a15e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77c3fbb8e9bec217f51110f4fe2021d.png)
![](https://img.xkw.com/dksih/QBM/2020/12/24/2621025203634176/2626876898041856/STEM/967e0196-91b4-43e3-9008-09486af3f9e3.png?resizew=270)
A.![]() | B.![]() | C.![]() | D.![]() |
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6卷引用:安徽省合肥市第六中学2020-2021学年高二上学期诊断性测试数学(文)试题
名校
解题方法
10 . 如图所示,在三棱锥
中,
,
,
两两垂直,且
,
,
.设
是底面
内一点,定义
,其中
、
、
分别是三棱锥
、三棱锥
、三棱锥
的体积.若
,且
恒成立,则正实数
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491c3a4f72b84ebadd28b90711435adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8825d400f453c5c17a7beeb1cc9a9cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5064f5ce5ac8428e277fd578da84ec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0281a189cdd58c1a7053c58bb8e66e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b5e0b8c35a7d9b3d68db8e5c89b8bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0eaeb29ba5198d1bd74e7458856749a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32034cd802fdf71ec7af11b14d3ff619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeab404b8993f4d3b608cedbac8e8454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4f662d0cb7de9ce15bc89578cf87c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/e02a8ba0-af05-4425-8e42-8239dafa0958.png?resizew=130)
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2020-12-31更新
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4卷引用:安徽省池州市东至二中2020-2021学年高二上学期12月月考数学(文)试题