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1 . 《九章算术·商功》:“斜解立方,得两壍堵.斜解壍堵,其一为阳马,一为鳖臑.阳马居二,鳖臑居一,不易之率也.合两鳖臑三而一,验之棊,其形露矣.”即将底面为长方形且有一条侧棱与底面垂直的四棱锥称之为阳马,将四个面都为直角三角形的四面体称之为鳖臑.如图所示为鳖臑
,
平面
,
,
,
分别在棱
,
上,且
,
.若
,则三棱锥
外接球的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c439e4e4e48b17e19e666d892216fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95226c64f0afdaa10b95ec097a0720ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a392d05d3cfcbb438569b1ea9980dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82959bc6a8397312ff9e9cee81c090bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ca27ab3f3d2975779f7191cb0db58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e6476d3b1cc89d23dbe7a597ef980d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10026cc1f29356e4f97f14daa4814145.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/6/f12eb090-36ff-4265-a83b-3b76f31bb3ed.png?resizew=126)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 唐朝的狩猎景象浮雕银杯如图1所示,其浮雕临摹了国画、漆绘和墓室壁画,体现了古人的智慧与工艺,它的盛酒部分可以近似地看作是半球与圆柱的组合体(假设内壁表面光滑,忽略杯壁厚度),如图2所示,已知球的半径为R,酒杯内壁表面积为
,设酒杯上部分(圆柱)的体积为
,下部分(半球)的体积为
,则
()
![](https://img.xkw.com/dksih/QBM/2020/8/12/2526446175502336/2529038209163264/STEM/d5f593159f9045238fc0b94cfbbb2776.png?resizew=397)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e06b0266dc099a57f41f3ca6ed9827c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f4784453d5db30fbb7df3ffa85be30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea87fc8705bde72f090cc253f89b0e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebae0fe155a5086daf575b1364814584.png)
![](https://img.xkw.com/dksih/QBM/2020/8/12/2526446175502336/2529038209163264/STEM/d5f593159f9045238fc0b94cfbbb2776.png?resizew=397)
A.2 | B.![]() | C.![]() | D.1 |
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2020-08-16更新
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773次组卷
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4卷引用:重庆市第八中学2019-2020学年高一下学期期末数学试题
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