解题方法
1 . 如图所示的几何体由等高的
个圆柱和
个圆柱拼接而成,点
为弧
的中点,且
四点共面
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/ff086209-9587-4d4e-a1be-792d1c68a242.png?resizew=144)
(1)证明:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e5557f66d64003df388ec060554616.png)
(2)若四边形
为正方形,且四面体
的体积为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796cf8748bd5fdb5f6602be180e9c830.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/ff086209-9587-4d4e-a1be-792d1c68a242.png?resizew=144)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa3c61d6c19e187b4b824b6f5610cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e5557f66d64003df388ec060554616.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92d220be10b55272aab5bacd9f69721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
您最近一年使用:0次
2021-03-11更新
|
443次组卷
|
3卷引用:陕西省榆林市2021届高三下学期二模文科数学试题
陕西省榆林市2021届高三下学期二模文科数学试题贵州省黔东南州2021届高三高考模拟考试数学(文)试题(已下线)解密13 空间几何体(分层训练)-【高频考点解密】2021年高考数学(文)二轮复习讲义+分层训练
20-21高三下·全国·开学考试
名校
解题方法
2 . 在四棱锥
中,
平面
,
.四边形
为梯形,
.
![](https://img.xkw.com/dksih/QBM/2021/3/6/2672272155590656/2672349544833024/STEM/6c2638d6-3e26-419e-b57a-b9564f80f04b.png)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4503cbce25b3c763c3677b042125efa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a9f7422878a294a792fbb2e962b6cf.png)
![](https://img.xkw.com/dksih/QBM/2021/3/6/2672272155590656/2672349544833024/STEM/6c2638d6-3e26-419e-b57a-b9564f80f04b.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30067b7b236d17af8a462f96a58d11bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ac7cf883a6e586d06e3f33875bd95b.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c0d515775fa08afc81ed7c281ee89a.png)
您最近一年使用:0次
2021-03-07更新
|
1852次组卷
|
4卷引用:陕西省宝鸡中学2022-2023学年高一下学期期末数学试题
陕西省宝鸡中学2022-2023学年高一下学期期末数学试题(已下线)百师联盟2020-2021学年高三下学期开年摸底联考考文科数学试卷(全国Ⅰ卷)(已下线)专题32 仿真模拟卷01-2021年高考数学(文)二轮复习热点题型精选精练百师联盟2021届高三开学摸底联考数学(文)试题
名校
解题方法
3 . 如图,在四棱锥
中,
是等边三角形,平面
平面
,底面是直角梯形,
,已知
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/ec9a67e3-2747-4ae4-9efa-0d105f814faf.png?resizew=158)
(1)若
为
的中点,求证:
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5ba108d7d2d4807f2c74a22e536fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/ec9a67e3-2747-4ae4-9efa-0d105f814faf.png?resizew=158)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372d059202ec388960b125d4a87dc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2021-02-27更新
|
239次组卷
|
2卷引用:陕西省西安市第三中学2020-2021学年高一上学期期末数学试题
名校
解题方法
4 . 如图,在直四棱柱
中,
,
,
是
的中点,且
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de9afe69f91d9c62a336c87559eb207.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/e6375363-2d90-4420-9ebe-583b9fe665fb.png?resizew=196)
(1)证明:
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de9afe69f91d9c62a336c87559eb207.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/e6375363-2d90-4420-9ebe-583b9fe665fb.png?resizew=196)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc8021865f71bc4d19845c718277843.png)
您最近一年使用:0次
5 . 在
中,AB=6,AC=8,BC=10.
(1)求将
绕AB所在的直线旋转一周所得的几何体的体积;
(2)求将
绕BC所在的直线旋转一周所得的几何体的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
(1)求将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
(2)求将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
您最近一年使用:0次
2021-02-27更新
|
333次组卷
|
3卷引用:陕西省西安市新城区2020-2021学年高一上学期期末数学试题
陕西省西安市新城区2020-2021学年高一上学期期末数学试题(已下线)第5课时 课后 圆柱、圆锥、圆台、球的表面积与体积新疆生产建设兵团第六师五家渠高级中学2023届高三下学期2月月考数学(文)试题
名校
解题方法
6 . 如图,在三棱锥
中,平面
平面
是
的中点.
![](https://img.xkw.com/dksih/QBM/2021/2/4/2650766210842624/2651355765391360/STEM/f659d0dbc3594920af3e739da7f7a60e.png?resizew=182)
(1)求证:
平面
;
(2)设点N是
的中点,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77bf94a25fd5f9ef3964da3bd275343e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/2021/2/4/2650766210842624/2651355765391360/STEM/f659d0dbc3594920af3e739da7f7a60e.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2730b513bd3359c3dfe6567e04f5ef9.png)
(2)设点N是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7c5bd21efd3ab16ef22b64edbcab2b.png)
您最近一年使用:0次
2021-02-05更新
|
864次组卷
|
3卷引用:陕西省咸阳市2020-2021学年高三上学期高考模拟检测(一)文科数学试题
陕西省咸阳市2020-2021学年高三上学期高考模拟检测(一)文科数学试题江西省兴国县第三中学2020-2021学年高二下学期第一次月考数学(文)试题(已下线)8.6.2直线与平面垂直(第2课时) 直线与平面垂直的性质(分层作业)-【上好课】
名校
解题方法
7 . 如图,在三棱锥
中,
,O是
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638955185750016/2641471786500096/STEM/153a4f3af4ff489181b7bf0620739748.png?resizew=241)
(1)证明:
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6785cd48756ef330758ede84c0964b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47fa5c5804385e2c2ab8279a7fee677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c435dfe74d9cc4d14803ad4419eb116.png)
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638955185750016/2641471786500096/STEM/153a4f3af4ff489181b7bf0620739748.png?resizew=241)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbd7c2767c106faf27d6a97ebc8e739.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf9718967af7a01c5b4866ea6f73bbb.png)
您最近一年使用:0次
2021-01-22更新
|
1594次组卷
|
6卷引用:陕西省渭南市韩城市2020-2021学年高一上学期期末数学试题
陕西省渭南市韩城市2020-2021学年高一上学期期末数学试题陕西省西安市阎良区2020-2021学年高一上学期期末数学试题(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)江西省宁冈中学2020-2021学年高二上学期第二次段考数学(理)试题黑龙江省哈尔滨市第四中学校2022-2023学年高二上学期开学考试数学试题甘肃省天水市第一中学2021-2022学年高一下学期期末考试数学试题
解题方法
8 . 如图,
平面
,四边形
为直角梯形,
.
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638885659746304/2640067072401408/STEM/79b6d77d0b404cd09d7e9aacca2c1175.png?resizew=173)
(1)证明:
.
(2)若
,点
在线段
上,且
,求三棱锥
的体积.
![](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/48851e423f9000c3d8a49b1ad4db3d33.png)
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638885659746304/2640067072401408/STEM/79b6d77d0b404cd09d7e9aacca2c1175.png?resizew=173)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c231fb9aeaf4b73c2d835bb4c3d42b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e4e97a4bd7675f12f73266254dd435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297f713ddbcc4578e73c8afe3a52abfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c56fdffb50f1e47bd067d39e7ebe3c0.png)
您最近一年使用:0次
2021-01-20更新
|
421次组卷
|
2卷引用:陕西省渭南市2020-2021学年高三上学期教学质量检测(一)文科数学试题
名校
解题方法
9 . 一个透明的球形装饰品内放置了两个具有公共底面的圆锥,且这两个圆锥的顶点和底面圆周都在这个球面上,如图,已知圆锥底面面积是这个球的表面积的
,设球的半径为R,圆锥底面半径为r.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/31/d81365a1-6864-42a3-957e-e431bf035a97.png?resizew=159)
(1)试确定R与r的关系,并求出大圆锥与小圆锥的侧面积的比值.
(2)求出两个圆锥的总体积(即体积之和)与球的体积之比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b32a0aea3308e1678a290ccb84b741.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/31/d81365a1-6864-42a3-957e-e431bf035a97.png?resizew=159)
(1)试确定R与r的关系,并求出大圆锥与小圆锥的侧面积的比值.
(2)求出两个圆锥的总体积(即体积之和)与球的体积之比.
您最近一年使用:0次
2021-01-30更新
|
1471次组卷
|
8卷引用:陕西省西安市第一中学2020-2021学年高一上学期12月月考数学试题
陕西省西安市第一中学2020-2021学年高一上学期12月月考数学试题(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8.2 简单几何体的表面积与体积(B卷提升篇)-2020-2021学年高一数学必修第二册同步单元AB卷(新教材人教A版,浙江专用)河北省任丘市第一中学2020-2021学年高一下学期第一次阶段考试数学试题(已下线)第八章 立体几何初步单元自测卷(二)沪教版(2020) 必修第三册 达标检测 第11章 11.4 球山东省烟台栖霞市第一中学2022-2023学年高一下学期6月月考数学试题山西省大同市第一中学校2024届高三上学期10月月考数学试题
名校
解题方法
10 . 如图1,四棱锥
的底面是正方形,PD垂直于底面ABCD,M是PC的中点,已知四棱锥的侧视图,如图2所示.
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646564385800192/2647475988488192/STEM/def7646423a94f54baa340b149f692a7.png?resizew=220)
(1)证明:
;
(2)求棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646564385800192/2647475988488192/STEM/def7646423a94f54baa340b149f692a7.png?resizew=220)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ce4b27f4d4ab677f5226f4451f35f3.png)
(2)求棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ca90486f5edcf87de3cd818fc9189a.png)
您最近一年使用:0次
2021-01-30更新
|
518次组卷
|
4卷引用:陕西省西安市第一中学2020-2021学年高一上学期12月月考数学试题
陕西省西安市第一中学2020-2021学年高一上学期12月月考数学试题陕西省宝鸡市陈仓区2020-2021学年高一上学期期末数学试题(已下线)8.6空间直线、平面的垂直(1)(精炼)-2020-2021学年高一数学一隅三反系列(人教A版2019必修第二册)专题6.5 立体几何初步(基础巩固卷)-2021-2022学年高一数学北师大版2019必修第二册