1 . 已知甲、乙两个圆台上、下底面的半径均为
和
,母线长分别为
和
,则两个圆台的体积之比![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509322d1ac9bebd7cb434c17a7ee53ec.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2858005b9ae89ae080d83dcc13cf8e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3e95410f3b4fcb0cba425b521d1f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9c70db11cd811fc2ff0fff93988b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b252300558bc5528b39b0bd8bc9b8074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509322d1ac9bebd7cb434c17a7ee53ec.png)
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2 . 已知圆锥的轴截面为正三角形,该圆锥的侧面积数值与其体积数值相等,则该圆锥的底面积为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 如图所示,在直三棱柱
中,
,
,P是线段
上一动点,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a9d9e0846c18e819321146d86bbee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2cea18c8934e88822e18be2c1be0e77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb88a50d8b1ba6b57083f55b32de9a05.png)
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4 . 如图所示,正四棱台
中,
,点P在四边形ABCD内,点E是AD上靠近点A的三等分点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f010c6ad7b36d63938d5781d2f155c71.png)
A.![]() ![]() |
B.该正四棱台的高为![]() |
C.若![]() ![]() |
D.过点E的平面![]() ![]() ![]() ![]() |
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5 . 如图,四棱锥
的底面
为矩形,且
平面
,若
,则下列结论错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fb7c585995d694d03475797830ca98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/795eb94a21fc9699d55bb819ec6bd3b8.png)
A.直线![]() ![]() ![]() | B.平面![]() ![]() |
C.![]() | D.二面角![]() ![]() |
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昨日更新
|
274次组卷
|
3卷引用:【高一模块一】难度6 小题强化限时晋级练 (中等3)
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解题方法
6 . 在正方体
中,下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.![]() ![]() ![]() | B.AC和![]() ![]() |
C.![]() ![]() ![]() | D.![]() ![]() ![]() |
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解题方法
7 . 如图,在正方体
中,点
是棱
上的一个动点,平面
交棱
于点
,则下列命题中不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c241f900cb6ed341c137a3d71216a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
A.存在点![]() ![]() ![]() |
B.对于任意点![]() ![]() |
C.四边形![]() ![]() |
D.三棱锥![]() ![]() |
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8 . 如图,直三棱柱
的底面为直角三角形,
,
,
,P是
上一动点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4346641491fc90d125ebbd06343382a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe236a434aa88e5633ea61574d1bed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b137cfdfd49c53ebe14992115d604422.png)
A.5 | B.![]() | C.![]() | D.![]() |
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解题方法
9 . 如图,在长方体
中,
,E,F分别为BC,
的中点,点P在矩形
内运动(包括边界),若
平面AEF,则动点P的轨迹长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44bc2abe776581718582b7eaa189c3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24579dca7ff1542ae019fc36110dddbe.png)
A.2 | B.![]() | C.![]() | D.![]() |
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10 . 已知圆锥的母线长为4,过该圆锥顶点的平面截此圆锥所得截面面积的最大值为8,则该圆锥底面半径的取值集合为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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