如图,已知圆锥的高是底面半径的2倍,侧面积为
,若正方形
内接于底面圆
,则四棱锥
的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ecd5a154f24e9e534ed26278fea956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/e1fffb2b-f5fa-4678-b170-1ef1b985bf24.png?resizew=135)
更新时间:2019-05-22 11:18:00
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【知识点】 锥体体积的有关计算
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填空题-单空题
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较易
(0.85)
解题方法
【推荐1】如图,在正三棱柱
中,已知
,点
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时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b8f1778debde59a099da818fa4853d.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b8f1778debde59a099da818fa4853d.png)
![](https://img.xkw.com/dksih/QBM/2020/7/20/2510063947784192/2514777831063553/STEM/e1c0fbc35b68487ebee3c6162d988ed3.png?resizew=207)
您最近一年使用:0次
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较易
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解题方法
【推荐2】五月五,是端午,门插艾,香满堂,吃粽子,蘸白糖,粽子古称“角黍”,是我国南北各地的节令食品,因各地风俗不同,粽子的形状和食材也会不同,有一种各面都是正三角形的正四面体形粽子,若该正四面体粽子的棱长为
,则现有
体积的食材,最多可以包成这种粽子________ 个.
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