名校
解题方法
1 . 如图,在三棱台
中,平面
平面ABC,
,
,
.______ .
(2)若
,求三棱锥
外接球表面积______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7d82423b6f211a7ac51a850b55e73a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e47690ed332c573186992b6d25654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c57d4c6ddf04ef6eaa2987378b434b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
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解题方法
2 . 已知棱长相等的正三棱锥
底面的三个顶点
均在以
为球心的球面上(其中
为
的中心),球面与棱
分别交于点
.若球
的表面积为
,则多面体
的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bb1063e139610045f3bca5ca0b2766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2c4f20594ab1443c0d8dcce42895f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02dba908a505cff93e0b297d00b82a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
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解题方法
3 . 图1中的扫地机器人的外形是按照如下方法设计的:先画一个正三角形
,再以正三角形每个顶点为圆心,以边长为半径,在另两个顶点间作一段弧,三段弧围成的曲边三角形.德国工程师勒洛首先发现这个曲边三角形能够像圆一样当作轮子用,故称其为“勒洛三角形”.将其推广到空间,如图2,以正四面体
的四个顶点为球心,以正四面休的校长为半径的四个球的相交部分围成的几何体叫做“勒洛四面休”.则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.若正三角形![]() ![]() ![]() |
B.若正三角形![]() ![]() ![]() ![]() |
C.若正四面体![]() ![]() |
D.若正四面体![]() ![]() ![]() |
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4 . 如图(1)所示,已知点
在抛物线
上,过
作
轴于点
,且
.将曲边三角形
如图(2)所示放罝,并将曲边三角形
沿平面
的垂线方向平移一个单位长度(即
),得到相应的几何体
.取一个底面面积为
高为
的正四棱锥
放在平面
上如图(3)所示,这时,平面
平面
,现用平行于平面
的任意一个平面去截这两个几何体,截面分别为矩形
,四边形
,截面与平面
的距离为
),试用祖暅原理,求曲边三角形
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f07aeaad7ee076170141958bc50c281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fbeb2f1f6ee7279885520d889bfc47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a60f5d069760bfe69f9cdc1b6e1e048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8cc0b4997cae4d8aec791a1d3923314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361f7acf85f542583cbaac80bce3dce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b12b21b3703c6823387c61c40fe0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898301af85d5e12c37cfcd3b50c9f891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf1d945c5b6f66c4c8c9272c30dfd7c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6613583510bed92647437168c279b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 如图,在长方体
中,四边形
的周长为
,长方体
的体积为
.
的表达式;
(2)若自变量
从
变到
,求
的平均变化率;
(3)若
,求
在
处的瞬时变化率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/121dd9ae224aa010a3c1a3e923ccd926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed2c35a296c15105064bd1f3bb7953b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed2c35a296c15105064bd1f3bb7953b.png)
(2)若自变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed2c35a296c15105064bd1f3bb7953b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74313912259d54b0d7d63d306d981f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed2c35a296c15105064bd1f3bb7953b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
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6 . 正四棱台的上、下底面的边长分别为2,8,侧棱长为
,则其体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-04-18更新
|
1618次组卷
|
4卷引用:辽宁省东北育才学校双语校区2023-2024学年高一下学期期中考试数学试题
名校
7 . 如图所示,一个圆锥
的底面是一个半径为
的圆,
为直径,且
,点
为圆
上一动点(异于
,
两点),则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace407933ee8a2bbf7f4663e5682ea97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() ![]() |
B.二面角![]() ![]() |
C.点![]() ![]() ![]() |
D.点![]() ![]() ![]() ![]() |
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2024-03-14更新
|
675次组卷
|
3卷引用:辽宁省东北育才学校双语校区2023-2024学年高一下学期期中考试数学试题
名校
解题方法
8 . 将一个棱长为1的正方体放入一个圆柱内,正方体可自由转动,则该圆柱体积的最小值为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-12-25更新
|
559次组卷
|
3卷引用:辽宁省本溪市第一中学2023-2024学年高二上学期11月期中考试数学试题
名校
解题方法
9 . 如图,在
中,
,
,
,
.将
沿
折起,使点
到达点
的位置.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/6bc3a36b-0c44-47ad-aaaa-2d47173c4849.png?resizew=264)
(1)请在答题纸的图中作出平面
与平面
的交线,并指出这条直线(不必写出作图过程);
(2)证明:平面
平面
;
(3)若直线
和直线
所成角的大小为
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a80d4477c5fa6dc0a2f61003cf060a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cabe5ff6cf52b2abe74eb3771789708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3402ea855e2ae2dcd98f607bef4fdd6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdb8041c0cf7f3da0b449f1b282ab36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/6bc3a36b-0c44-47ad-aaaa-2d47173c4849.png?resizew=264)
(1)请在答题纸的图中作出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
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10 . 在正方体
中,
,
,
分别为
,
,
的中点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/17f83829-794f-4809-bbe8-32a953c86afb.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/17f83829-794f-4809-bbe8-32a953c86afb.png?resizew=166)
A.直线![]() ![]() |
B.直线![]() ![]() |
C.三棱锥![]() ![]() ![]() |
D.平面![]() |
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2023-12-04更新
|
471次组卷
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2卷引用:辽宁省辽南协作体2024届高三上学期期中数学试题(A)