1 . 圆台内有一个球,该球与圆台的侧面和上下底面均相切,球的球心为
.已知圆台上底面圆的半径为1,下底面圆的半径为
,母线与底面所成的角为
,且
.若该圆台的上下两个底面都在同一个球的球面上,该球的球心为
,记圆台的表面积为
,体积为
,球
的表面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad83973d1361b2928c7e783ffd073b75.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a3587375b61aba9c85c469e40f5148.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd15bcd2eda1d7a943170b39a94a54a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da19f0d43a33b280c90491d999ce8227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150a135bbd528daf3f19a58a621a57c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad83973d1361b2928c7e783ffd073b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a3587375b61aba9c85c469e40f5148.png)
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2 . 两个向量
和
的叉乘写作
,叉乘运算结果是一个向量,其模为
,方向与这两个向量所在平面垂直.若
,
,则
.如图,已知在四棱锥
中,底面
是直角梯形,
,
,
,
,
,
,
分别是
,
,
,
的中点.
平面
;
(2)已知
,
,
为
中点,以
为原点,
的方向为
轴的正方向建立空间右手直角坐标系.
①求
;
②求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aba64ae92194bc4f0f6e49725471542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d32b8e0db81b4ef5184cabb26d05da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c47d736aacb6475407c5a1ddccc0ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e19bfb8bf10f5af770eeb59a375754b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39f704aab45983e7b8af7c2c5c9c9a6.png)
![](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/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0184f9233d2980b84628393246d548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e0b7d845cbceccd3e76ca461fcc534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd082397c8b5dd243e4e395c1540960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05479863cf9f41e2ad9f843ea740a3c0.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f5c40f909fae89547423350cd87398d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0a0c299356c26338d4153748e8a61d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5043a1db17715a9a1f1783c755c446ee.png)
②求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8103f08579983694dc41a0af979b94.png)
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3 . 已知圆锥的顶点为
,
为底面圆心,母线
与
互相垂直,
的面积为2,
与圆锥底面所成的角为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e49817548cb45b3d1e58570644c6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c26b2e3a5f4771ac6db26df1b98ae0.png)
A.圆锥的高为1 | B.圆锥的体积为![]() |
C.圆锥侧面展开图的圆心角为![]() | D.二面角![]() ![]() |
您最近一年使用:0次
名校
解题方法
4 . 如图,在直三棱柱
中,
,点
分别在棱
上,
为
的中点.
内,过
作一条直线与平面
平行,并说明理由;
(2)当三棱柱
的体积最大时,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f9a12befb000adad1ffe56025ba831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e86e3991200297ad172455e5ea93f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28cdc44ef71034084b13630d363acc4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(2)当三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2024-04-08更新
|
1176次组卷
|
2卷引用:山东省泰安市新泰第一中学2024届高三下学期高考模拟测试(一)数学试题
名校
解题方法
5 . 已知正四棱台的上下底面边长分别为1和3,高为2.用一个平行于底面的截面截棱台,若截得的两部分几何体体积相等,则截面与上底面的距离为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-22更新
|
1197次组卷
|
3卷引用:山东省泰安市新泰第一中学老校区(新泰中学)2024届高三上学期高考模拟数学试题
解题方法
6 . 若正四棱锥
的体积为
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391005600bdd69c96750589f9adb048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a942f0c81bd10af973c1d421f6adcad5.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 如图,在直三棱柱
中,
,
,
,点M在线段
上,且
,N为线段
上的动点,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/d1f33241-6f9a-472f-a93d-09978ac0e2a7.png?resizew=114)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209377196940bffa8ffa5f55b9c59fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12405fa4e43fc6ccafa8e5b31bcdb6c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ef601ca1f9c4c031adab4ffed297f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/d1f33241-6f9a-472f-a93d-09978ac0e2a7.png?resizew=114)
A.当N为![]() ![]() ![]() ![]() |
B.当![]() ![]() ![]() ![]() |
C.![]() ![]() |
D.存在点N,使得三棱锥![]() ![]() |
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2023-04-30更新
|
1171次组卷
|
3卷引用:山东省泰安市2023届高三二模数学试题
8 . 我国古代《九章算术》将上下两个平行平面为矩形的六面体称为刍童.如图所示的池盆几何体是一个刍童,其中上下底面为正方形,边长分别为6和2,侧面是全等的等腰梯形,梯形的高为
.已知盆中有积水,将一半径为1的实心铁球放入盆中之后,盆中积水深变为池盆高度的一半,则该盆中积水的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/9fd6dd13-c19c-4617-a2b7-43cf66ca6db3.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/9fd6dd13-c19c-4617-a2b7-43cf66ca6db3.png?resizew=131)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-04-30更新
|
998次组卷
|
3卷引用:山东省泰安市2023届高三二模数学试题
9 . 如图,正方形ABCD的边长为1,M,N分别为BC,CD的中点,将正方形沿对角线AC折起,使点D不在平面ABC内,则在翻折过程中,以下结论中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/5643df72-cb42-42fd-8270-55c4f082d512.png?resizew=296)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/5643df72-cb42-42fd-8270-55c4f082d512.png?resizew=296)
A.异面直线AC与BD所成的角为定值 |
B.三棱锥![]() ![]() |
C.存在某个位置,使得直线AD与直线BC垂直 |
D.三棱锥![]() ![]() |
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2023-03-22更新
|
1575次组卷
|
2卷引用:山东省泰安市2023届高三下学期一轮检测数学试题
10 . 在如图所示的几何体中,底面ABCD是边长为6的正方形,
,
,
,
,点P,Q分别在棱GD,BC上,且
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/c83e7d9f-02fb-4923-ab8a-5b25880575ae.png?resizew=176)
(1)证明:
平面ABCD;
(2)设H为线段GC上一点,且三棱锥
的体积为18,求平面ACH与平面ADH夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5b4ea605cf0b98e428d071f6be6762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd6d3033acc3352d23e997c0582c422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7234f73c02335c2cc0b452f191c168f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb6823a329628699619a39cde927510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e771dbcebd8e3d556141449bdbb053c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc862687ca2b31b20dd37eb5375cae6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b182ff664d8ed9d0c518dbbf98ef10f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/c83e7d9f-02fb-4923-ab8a-5b25880575ae.png?resizew=176)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
(2)设H为线段GC上一点,且三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244c485406cca45c4290b1320bf8ce90.png)
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