21-22高一·全国·课后作业
解题方法
1 . 如图,在四棱锥
中,
是矩形,
⊥平面
,
,
,点F是PD的中点,点E在CD上移动.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/6aa1688a-d16a-4cf5-b4a1-bc27ad976852.png?resizew=151)
(1)求三棱锥
体积;
(2)当点E为CD的中点时,试判断EF与平面
的关系,并说明理由;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ff5ff92f2505a933d0213039f4c014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3236f875afedd5cfe45e7d01af930a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8daf1be3f1b1446a8e4e2c4c1a8279e2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/6aa1688a-d16a-4cf5-b4a1-bc27ad976852.png?resizew=151)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c194570b1d3c78d77303bdea76cc2c9.png)
(2)当点E为CD的中点时,试判断EF与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
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解题方法
2 . 如图,半径
的球
中有一内接圆柱,设圆柱的高为
,底面半径为
.
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967044991107072/2970571709235200/STEM/94d86259-c6bc-4d32-8e87-99ffdbe6421c.png?resizew=160)
(1)当
时,求圆柱的体积与球的表面积;
(2)当圆柱的轴截面
的面积最大时,求
与
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9d49944b2ca4e5afce95aa7a1e45e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967044991107072/2970571709235200/STEM/94d86259-c6bc-4d32-8e87-99ffdbe6421c.png?resizew=160)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae96cd3fcb18e7ba8919bdf4aef510a6.png)
(2)当圆柱的轴截面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
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2022-05-02更新
|
916次组卷
|
4卷引用:4.5.2 几种简单几何体的体积
4.5.2 几种简单几何体的体积广西三新2021-2022学年高一4月教学质量测评段考数学试题广东省佛山市南海区桂华中学2021-2022学年高一下学期第二次阶段测试数学试题(已下线)6.6.3球的表面积和体积(课件+练习)
解题方法
3 . 如图,在等腰直角三角形△ABC中,
,
,在三角形内挖去一个半圆(圆心O在边BC上,半圆与AC、AB分别相切于点C,M,与BC交于点N),将△ABC绕直线BC旋转一周得到一个旋转体
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967298071248896/2969138562105344/STEM/31b1f32a-429c-4275-9789-1b9c73a363ee.png?resizew=145)
(1)求该几何体中间一个空心球的表面积的大小;
(2)求图中阴影部分绕直线BC旋转一周所得旋转体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fa072bc57532c96c676c8d05dcfa03.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967298071248896/2969138562105344/STEM/31b1f32a-429c-4275-9789-1b9c73a363ee.png?resizew=145)
(1)求该几何体中间一个空心球的表面积的大小;
(2)求图中阴影部分绕直线BC旋转一周所得旋转体的体积.
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4 . 某甜品店制作蛋筒冰淇淋,其上半部分呈半球形,下半部分呈圆锥形(如图).现把半径为10cm的圆形蛋皮分成相同的5个扇形,用一个扇形蛋皮围成锥形侧面(蛋皮厚度忽略不计),求该蛋筒冰淇淋的体积(精确到0.1).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/18/c312254c-a678-46e5-b7b5-fe61244401fc.png?resizew=129)
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5 . 如图,OABC是边长为1的正方形,
是四分之一圆弧,求图中阴影部分绕轴OC旋转一周得到的旋转体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963715102638080/2968418917613568/STEM/a1c07cb1-b3fe-4224-8e5d-9cc34d924ece.png?resizew=146)
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6 . 如图,用一块钢锭浇筑一个厚度均匀,且表面积为2平方米的正四棱锥形有盖容器,设容器的高为h米,盖子的边长为a米.
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963715720667136/2967930593640448/STEM/bc6b0896d33b4972856cedc18db81460.png?resizew=185)
(1)求a关于h的函数解析式;
(2)当h为何值时,容器的容积V最大?并求出V的最大值.
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963715720667136/2967930593640448/STEM/bc6b0896d33b4972856cedc18db81460.png?resizew=185)
(1)求a关于h的函数解析式;
(2)当h为何值时,容器的容积V最大?并求出V的最大值.
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2022-04-28更新
|
201次组卷
|
2卷引用:沪教版(2020) 必修第三册 新课改一课一练 第11章 数学建模
7 . 推导球的表面积公式.
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8 . 已知
,将
的图像与x轴围成的封闭图形绕x轴旋转一周,求所得的旋转体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca91effd3b32d413c7544c349367131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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9 . 已知直四棱柱
中,
,底面
是直角梯形,
为直角,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963682767224832/2964912023330816/STEM/40244c2d-a21d-415f-b7b0-ec8593be7da1.png?resizew=225)
(1)求直四棱柱的体积;
(2)求异面直线
与
所成角的大小.(结果用反三角函数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e2a44d05b1d387150c4b359e021ffc.png)
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963682767224832/2964912023330816/STEM/40244c2d-a21d-415f-b7b0-ec8593be7da1.png?resizew=225)
(1)求直四棱柱的体积;
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
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