已知圆锥的顶点为
,
为底面圆心,
,异面直线
与
所成角的余弦值为
,
的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/6282a5fe-9f1b-4ba2-9b49-9c65dbb578de.png?resizew=147)
(1)求该圆锥的表面积;
(2)求该圆锥内半径最大的球的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950e673dc286ecdfa54dc7ab146770b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6486784415f3537c9a13556c05d893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e49817548cb45b3d1e58570644c6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461dc722a8b3edc8147bf7b5f6e6eb11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/6282a5fe-9f1b-4ba2-9b49-9c65dbb578de.png?resizew=147)
(1)求该圆锥的表面积;
(2)求该圆锥内半径最大的球的体积.
更新时间:2023-12-12 23:01:10
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【推荐1】一个圆锥底面半径为
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(1)求圆锥的表面积.
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(1)求圆锥的表面积.
(2)求圆锥的内接正四棱柱表面积的最大值.
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【推荐2】已知圆锥的底面半径为1,高为3,其中有一个高为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求圆锥的侧面积;
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【推荐1】在底面是矩形的四棱锥
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
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【推荐2】如图,半球内有一内接正方体(即正方体的一个面在半球的底面圆上,其余顶点在半球上).若正方体的棱长为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/16/8281811f-4cfc-416b-875c-97a7cc319622.png?resizew=232)
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【推荐1】已知正四面体的顶点都在表面积为
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【推荐2】如图,在四棱锥
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/26c43374-da65-4401-b193-ec024e91c231.png?resizew=121)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a150d2c56d15a7154e2a6d02f13989e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb12b271663dfd4f605a24fa853381b7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/26c43374-da65-4401-b193-ec024e91c231.png?resizew=121)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a1219bc313db46b07bbd68600267a4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97d352b45ba7850c84e054ed9131de29.png)
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【推荐1】已知平行六面体
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5600c2061f6e12991bf271a4a3ab51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0b2031cc2086aa9fd87b43f2eb697f8.png)
(1)棱
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【推荐2】如图1,四棱锥
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![](https://img.xkw.com/dksih/QBM/2013/6/25/1571254407020544/1571254412394496/STEM/d95437f410ba4ddd8324833ee45d9938.png?resizew=75)
![](https://img.xkw.com/dksih/QBM/2013/6/25/1571254407020544/1571254412394496/STEM/3ea377ca1df24932bfdc5bfd74acc708.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2013/6/25/1571254407020544/1571254412394496/STEM/85501d77ab0443e6bbe0f1dbc5cf138f.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2013/6/25/1571254407020544/1571254412394496/STEM/85501d77ab0443e6bbe0f1dbc5cf138f.png?resizew=48)
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(1)证明:
![](https://img.xkw.com/dksih/QBM/2013/6/25/1571254407020544/1571254412394496/STEM/3370736128e545aab0e0dae2a6317609.png?resizew=41)
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(2)线段
![](https://img.xkw.com/dksih/QBM/2013/6/25/1571254407020544/1571254412394496/STEM/09a8baa79cec45b8875750b284bbf133.png?resizew=27)
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![](https://img.xkw.com/dksih/QBM/2013/6/25/1571254407020544/1571254412394496/STEM/284932a4db0141ec8c7404eb6dddb8b7.png?resizew=32)
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