名校
解题方法
1 . 如图1,在矩形
中,
,
,将它沿对角线
折起,使
到
的位置,且平面
平面
,连接
(如图2),在图2中:
的外接球的体积;
(2)求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878659443e9a71a7649f11a557369f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c597ff77c65c5add6f50294e3eee9536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955f931eacfa227d887b0f4665fde5e6.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
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2 . 如图,一个正三棱柱形容器中盛有水,侧棱
,底面边长
,若侧面
水平放置时,水面恰好经过AC,BC,
的中点D,E,
,现将底面ABC水平放置.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/fe82bd80-2b81-4dc5-9027-a5838c0975ad.png?resizew=198)
(1)求水面的高度;
(2)打开上底面
的盖子,从上底面
放入半径为2的小铁球,当水从上底面
溢出时,求放入的小铁球个数的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceae631c4e6d2504225d655135e2d356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7bae5203f4b4acf23779114b3466e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0809be95930fa38bf02823dcf4ef81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188bc4f505b51ff183c5bbde31f93cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095a8ae415838e788a7e2e3e46b33d7c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/fe82bd80-2b81-4dc5-9027-a5838c0975ad.png?resizew=198)
(1)求水面的高度;
(2)打开上底面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1654f0789bb0af158a712fcdb8ca865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1654f0789bb0af158a712fcdb8ca865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1654f0789bb0af158a712fcdb8ca865.png)
您最近一年使用:0次
名校
解题方法
3 . 在长方体
中,AB=6,BC=8,
.
(1)求三棱锥
的体积;
(2)在三棱柱
内放一个体积为V的球,求V的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d0fdc5a00ca0e857b89a7e1420df29.png)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ebd86a076448d19401268f139b5b90.png)
(2)在三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
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4 . 据说伟大的阿基米德逝世后,敌军将领马塞拉斯给他建了一块墓碑,在墓碑上刻了一个如图所示的图案,图案中球的直径、圆柱底面的直径和圆柱的高相等,圆锥的顶点为圆柱上底面的圆心,圆锥的底面是圆柱的下底面.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/b387f30d-d7c1-422b-9d35-f92b8bd46e2b.png?resizew=98)
(1)试计算出图案中圆柱与球的体积比:
(2)假设球半径
,试计算出图案中圆锥的体积和表面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/b387f30d-d7c1-422b-9d35-f92b8bd46e2b.png?resizew=98)
(1)试计算出图案中圆柱与球的体积比:
(2)假设球半径
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8176754726d2194c890e80df1a1f1c3a.png)
您最近一年使用:0次
2020-09-04更新
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627次组卷
|
5卷引用:贵州省毕节市威宁县2019-2020学年高一下学期期末考试数学试题