名校
1 . 已知正方体
的棱长为1,P是对角面
(包含边界)内一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/6d929a77-227a-4a50-a5d6-997b59b4111e.png?resizew=161)
(1)求
的长度;
(2)是否存在点
,使得平面
平面
?若存在,求出点
的位置;若不存在,说明理由;
(3)过点
作平面
与直线
垂直,求平面
与平面
所成锐二面角的最小值,并求此时平面
截正方体
所得截面图形的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2bf9ef324f1289e205e29fed105c38e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036de574712cad14bddadf6653c7e714.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/6d929a77-227a-4a50-a5d6-997b59b4111e.png?resizew=161)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
您最近一年使用:0次
解题方法
2 . 由曲线
围成的封闭图形绕
轴旋转一周所得的旋转体的体积为
;满足
的点
所组成的封闭图形绕
轴旋转一周所得的旋转体的体积为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63055a5d6916f99d07fede49120753f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/9/ff4c3def-8c4e-4174-9496-7c9e1a7b36c3.png?resizew=426)
(1)当
时,分别求出两旋转体的水平截面的面积
;
(2)求
与
的关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16473364f2beecf1e4404987cd7e1c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ad9babbb0800e2fac1895399e24e01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63055a5d6916f99d07fede49120753f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/9/ff4c3def-8c4e-4174-9496-7c9e1a7b36c3.png?resizew=426)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbaa8af08dcb2eb604779d01a4cab47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3637753af5ce86be9c23a9beb6b5067.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63055a5d6916f99d07fede49120753f.png)
您最近一年使用:0次
名校
解题方法
3 . 如图所示,在直四棱柱
中,底面ABCD是等腰梯形,
,
,
,四边形
是正方形.
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986420541005824/2987744622305280/STEM/0babbae5-66e1-4454-955f-aeecba309a60.png?resizew=245)
(1)指出棱
与平面
的交点E的位置(无需证明),并在图中将平面
截该四棱柱所得的截面补充完整;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12143a06ed24558d8cc7ad39961d3e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986420541005824/2987744622305280/STEM/0babbae5-66e1-4454-955f-aeecba309a60.png?resizew=245)
(1)指出棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8375f8f2a0dd3e0212ce52d334952c.png)
您最近一年使用:0次
2022-05-26更新
|
752次组卷
|
4卷引用:河南省平顶山市汝州市第一高级中学2022届高三下学期考前模拟考试理科数学试题
名校
解题方法
4 . 在空间直角坐标系
中,以坐标原点
为圆心,
为半径的球体上任意一点
,它到坐标原点
的距离
,可知以坐标原点为球心,
为半径的球体可用不等式
表示.还有很多空间图形也可以用相应的不等式或者不等式组表示,记
满足的不等式组
表示的几何体为
.
(1)当
表示的图形截
所得的截面面积为
时,求实数
的值;
(2)请运用祖暅原理求证:记
满足的不等式组
所表示的几何体
,当
时,
与
的体积相等,并求出体积的大小.(祖暅原理:“幂势既同,则积不容异”.意思是:所有等高处横截面积相等的两个同高立体,其体积也必然相等)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b82ad92798b264062c062f4a9a1a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9437ae697faa99579163106aa5a62e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df96a0b03e385cde1b42d6b64468b51c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848c9fd2f04fb6d9f9cec5f7c8756ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3ff0b0fea1cb642d3f6be77a1ff32f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfcff373b650f57e068b74b3356a9f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3ff0b0fea1cb642d3f6be77a1ff32f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9c018281fcaaf52863e1f83d9dad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
(2)请运用祖暅原理求证:记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8b3a41fd9d00b2c99425c1f7529639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6eaa137a2290a9a9ec7ad635d17dbb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfcff373b650f57e068b74b3356a9f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6eaa137a2290a9a9ec7ad635d17dbb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3ff0b0fea1cb642d3f6be77a1ff32f.png)
您最近一年使用:0次
2021-04-24更新
|
777次组卷
|
5卷引用:辽宁省“决胜新高考·名校交流“2021届高三3月联考数学试题
辽宁省“决胜新高考·名校交流“2021届高三3月联考数学试题八省名校2021届高三新高考冲刺大联考数学试题江苏省常州市前黄高级中学2021届高三下学期5月高考适应性考试(一)数学试题(已下线)第二章 立体几何中的计算 专题三 空间体积的计算 微点2 祖暅原理及球体积辅助体综合训练【培优版】(已下线)第六章 突破立体几何创新问题 专题一 交汇中国古代文化 微点2 与中国古代文化遗产有关的立体几何问题(二)【基础版】
5 . 已知棱长为2cm的正方体容器内盛满水,把半径为1cm的钢球放入水中,刚好被淹没;然后放入一个铁球,使它也淹没于水中.要使流出的水量最多,这个铁球的半径应为多少?
您最近一年使用:0次