1 . “木桶效应”是一个有名的心理效应,是指木桶盛水量的多少,取决于构成木桶的最短木板的长度,而不取决于构成木桶的长木板的长度,常被用来寓意一个短处对于一个团队或者一个人的影响程度.某同学认为,如果将该木桶斜放,发挥长板的作用,在短板存在的情况下,也能盛较多的水.根据该同学的说法,若有一个如图①所示的圆柱形木桶,其中一块木板有缺口,缺口最低处与桶口距离为2,若按照图②的方式盛水,形成了一个椭圆水面,水面刚好与左边缺口最低处M和右侧桶口N齐平,且MN为该椭圆水面的长轴.则此时比图①盛水方式多盛的水的体积为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-08-27更新
|
486次组卷
|
4卷引用:四川省资阳市2022-2023学年高二上学期期末文科数学试题
2 . 如图,在四面体
中,
两两垂直,
,则点
到平面
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576d6670e3441abae8870240e84b42c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9833ab0656ed160dba5fb61dca9bc2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/15/2ab79dd7-8f27-4b9a-8033-570dd2fee7fc.png?resizew=116)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 如图,在四棱锥
中,底面
为矩形,平面
平面
,
,
,
,
为
的中点,则三棱锥
的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c384a1a635268b368907ddd25702c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f73a0ca4e6c794242489066fddb6c5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/15/fe47d65f-ee7e-4b78-9181-614f5d1cb525.png?resizew=160)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 空间几何体是三视图如图所示,则该几何体的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/0285c66c-1599-44a8-b4a6-049774984ea9.png?resizew=204)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 已知圆台
的轴截面为
,圆台的上底面圆半径与高都等于1,下底面圆半径等于2,点
为下底圆弧
的中点,点
为上底圆周上靠近点
的弧
的四等分点,经过
三点的平面与弧
交于点
,且
三点在平面
的同侧.
(1)判断平面
与直线
的位置关系,并证明你的结论;
(2)
为下底圆周上左半部分(靠近
点)的一个动点,且与
点在
的不同侧,当四棱锥
的体积等于
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f39a69046713cefaf93ba28fc10ac0d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f77e5821b24a76c71fdc2cf59fbba308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/7/996c914e-d8d2-4745-902e-ffbc94dd41a8.png?resizew=211)
(1)判断平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9ba6567acb4d331c204b6d2105f980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da6442178194128ffb0937476cd38d.png)
您最近一年使用:0次
6 . 已知圆锥的母线长为8,底面周长为6π,则圆锥的体积为( )
A.![]() | B.![]() | C. ![]() | D. ![]() |
您最近一年使用:0次
解题方法
7 . 某几何体的三视图如图所示,其中正视图与侧视图都是长为3,宽为2的矩形,俯视图为扇形,则该几何体的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/8/4b69fb98-1ef1-4750-9502-8cdbb1a4759d.png?resizew=116)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-08-02更新
|
121次组卷
|
4卷引用:陕西省商洛市2022-2023学年高二下学期期末理科数学试题
8 . 已知圆锥的轴截面是一个底边长为8𝑐m,腰长为5𝑐m的等腰三角形,求圆锥的表面积和体积.
您最近一年使用:0次
9 . 正三棱柱体积是同底等高的正三棱锥体积的_______ 倍.
您最近一年使用:0次
解题方法
10 . 如图,在棱长为1的正方体
中.
(1)求证:
平面
;
(2)求三棱锥
体积.
(3)在对角线
上是否存在点
,满足
平面
成立,若存在,求出
点的具体位置,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/2/80347661-8cdd-461b-916a-2d4de326b171.png?resizew=151)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96946eaa2878fb8433eb2a97797a32b.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790d9caed8f616bcad22563ef6cae247.png)
(3)在对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次