名校
解题方法
1 . 如图,在直三棱柱
中,点D为棱
的中点.已知AB=BC=AA1=1,AC=
,以D为球心,以
为半径的球面与侧面
的交线长度为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f8f7e40ba386c0a9675896b52752d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638925325475840/2640797015375872/STEM/19bedede566a4a73be56e29b2e9843e9.png?resizew=152)
您最近一年使用:0次
解题方法
2 . 已知一个圆锥的轴截面是边长为
的等边三角形,则此圆锥外接球的体积是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
您最近一年使用:0次
2020-11-29更新
|
330次组卷
|
2卷引用:安徽省名校2020-2021学年高二上学期期中联考文科数学试题
解题方法
3 . 如图,在多面体
中,四边形
是矩形,
,
,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/496f5c86-704a-4034-b273-2f38b3024eab.png?resizew=197)
(1)若
点是
中点,求证:
平面
;
(2)求证:
平面
;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e89556992cbfd7043330ac7421d342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c91baecb97fadd4f8ab49e6effcbc04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3198a3e5c9200a3c6811fae4afa67b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55dcbe075165566acf363cd199f07ba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720c3b263dc80fa71df59fcaa37ecc1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5628323a7eeb11213df5c9048b3543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/496f5c86-704a-4034-b273-2f38b3024eab.png?resizew=197)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a779876cdfb2c489ad0eaed0f73e6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa3c61d6c19e187b4b824b6f5610cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c93a34cbd4c0dc198b74524c0e05a10.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e024a87e5b48bfa241169def613104.png)
您最近一年使用:0次
2018-01-23更新
|
1005次组卷
|
2卷引用:安徽省阜阳一中2017~2018学年高一第二学期开学考试数学试题
4 . 已知三棱锥
满足
底面
,在
中,
,
,
,
是线段
上一点,且
,球
为三棱锥
的外接球,过点
作球
的截面,若所得截面圆的面积的最小值与最大值之和为
,则球
的表面积为( )
![](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/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace0a67c09dc23959f1849724a999046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c8cfd6f5b2f47e34cb94169d154eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-12-25更新
|
412次组卷
|
2卷引用:安徽省皖南八校2019-2020学年高三上学期第二次联考数学(理)试题
解题方法
5 . 如图,在直三棱柱
中,
,
为
的中点,
.
![](https://img.xkw.com/dksih/QBM/2020/8/10/2524659167535104/2528410581852160/STEM/843d3e2062fe491b9fc3ebca1220b97c.png?resizew=226)
(1)证明:
平面
;
(2)若
,
,
,求三棱锥
的体积.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96957c7d9f28764f14db5aa3e286319.png)
![](https://img.xkw.com/dksih/QBM/2020/8/10/2524659167535104/2528410581852160/STEM/843d3e2062fe491b9fc3ebca1220b97c.png?resizew=226)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5890b3a4edc89b1de25cd07b17fa12fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1192b3111a6dad01bba5227472bb4072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5181b97a7e43959b8455680157c3b644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ee9b78c4c1496c6c8fda568365c900.png)
您最近一年使用:0次
6 . 如图,网格纸上小正方形的边长为1,粗实线画出的是某多面体的三视图,则该多面体外接球的体积为
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-05-06更新
|
463次组卷
|
2卷引用:【市级联考】安徽省淮北市、宿州市2019届高三第二次教学质量检测数学(理)试题
名校
7 . 如图,三棱锥
中,
,
,且
,则三棱锥
的外接球表面积为
![](https://img.xkw.com/dksih/QBM/2017/5/26/1695369071976448/1736965899231232/STEM/695a84a8531c4f4d9921f7d359164aca.png?resizew=129)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34933abea49d701b9bf40f3e88f0576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0af8c53f948eeec9df192e4d5878ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819dcfc55b777097bd41c5effe56cf9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://img.xkw.com/dksih/QBM/2017/5/26/1695369071976448/1736965899231232/STEM/695a84a8531c4f4d9921f7d359164aca.png?resizew=129)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-07-24更新
|
1000次组卷
|
4卷引用:安徽省六安市舒城中学2019-2020学年高二下学期期末文科数学试题
名校
解题方法
8 . 如图,三棱锥
中,
平面
,
,
,
,E为
的中点,F为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/75264713-d9b7-4952-94a1-c10ff8ae6b22.png?resizew=218)
(1)证明:
平面
;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65aff0abef2633a6c96690a43285d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea0df817e3e2cd95b9cd8f73386834c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/75264713-d9b7-4952-94a1-c10ff8ae6b22.png?resizew=218)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a247c4f11824d034046f88fc79b069f5.png)
您最近一年使用:0次
2020-08-10更新
|
302次组卷
|
2卷引用:安徽省高中教科研联盟2019-2020学年高二下学期期末联考文科数学试题
9 . 如图,在四棱锥
中,
平面
,底面
是菱形,
,
.
![](https://img.xkw.com/dksih/QBM/2018/11/28/2085346794405888/2086594540756992/STEM/c4bc18aa82a34178acd4cf39c27ef4bc.png?resizew=206)
(1)求证:平面
平面
;
(2)若
,
为线段
的中点,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/f945a69cf7e8213e50622125cde652f5.png)
![](https://img.xkw.com/dksih/QBM/2018/11/28/2085346794405888/2086594540756992/STEM/c4bc18aa82a34178acd4cf39c27ef4bc.png?resizew=206)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76159ccce148d025b98d990b0c8ad7a2.png)
您最近一年使用:0次
2018-11-30更新
|
571次组卷
|
2卷引用:安徽省安庆市怀宁县第二中学2018-2019学年高三上学期第四次月考数学(文)试题
10 . 某几何体的三视图如下图所示,则这个几何体的体积为__________ .
![](https://img.xkw.com/dksih/QBM/2018/1/6/1854390640893952/1855831735369728/STEM/0c76252ff8484721a72b7676ed8ea686.png?resizew=149)
您最近一年使用:0次
2018-01-08更新
|
442次组卷
|
7卷引用:2017届安徽省六安市第一中学高三下学期第九次月考数学(理)试卷
2017届安徽省六安市第一中学高三下学期第九次月考数学(理)试卷2016-2017学年江西省宜春市第一学期期末统考高一年级数学试卷河南省平顶山市郏县一中2017-2018学年高一上学期第三次月考数学试题河南省平顶山市郏县第一高级中学2017-2018学年高一上学期第三次月考数学试题(已下线)黄金30题系列 高一年级数学(必修一+必修二) 小题好拿分【提升版】江西省宜春市2018-2019学年高一上学期期末数学试题(已下线)二轮拔高卷01-【赢在高考·黄金20卷】备战2022年高考数学(文)模拟卷(全国卷专用)