名校
解题方法
1 . 已知
,
,
,
四点都在表面积为
的球
的表面上,若
是球
的直径,且
,
,则三棱锥
体积的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08a01aed02ce1eaf1aaefaa0342b7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c786b48d3aff4d2f73f83cc1a32a094a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
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解题方法
2 . 已知正四棱锥
的内切球半径为
,则当四棱锥
的体积最小时,它的高为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 如图,三棱锥
中,
为边长是
的正三角形,
底面
是线段
上一动点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6107c62250929d7d88d383ee7ceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.点B到平面![]() ![]() |
B.三棱锥![]() ![]() |
C.PB与AQ所成角可能为![]() |
D.![]() ![]() ![]() |
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4 . 请你在桌面上放置四个半径都是2cm的玻璃小球,并用一个半球形的容器罩住这四个小球,则这个容器的内壁半径的最小值为( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 三棱锥
中,
则三棱锥
的外接球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26418ff1b888c37279678479dc4dc82d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知正四面体的棱长为3,
,
,过点
作直线分别交
,
于
,
.设
,
(
).
的最小值及相应的
,
的值;
(2)在(1)的条件下,求:
①
的面积;
②四面体
的内切球的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714fe049aea26e4275f2389206b630fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab5777c7eb5f6e1d4b800f3ad7f08d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a7a2f33d8bced8ab9010b7e8ca582f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a7fecf55c00d2cd1358e8daaa85a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/496c777ba1fd4ba09fed8d5892461486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d6a99033826bd1b44f58b9e11ff52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
(2)在(1)的条件下,求:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999c42a021bdc576f097246b9e64d986.png)
②四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e453d251928fc8058ceeee602874702.png)
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2024-05-08更新
|
487次组卷
|
2卷引用:浙江G5联盟2023-2024学年高一下学期期中联考数学试题
名校
7 . 在棱长为2的正方体
中,则它的外接球的表面积为__________ ;若E为
的中点,则过B、D、E三点的平面截正方体
所得的截面面积为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
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2024-05-08更新
|
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|
3卷引用:浙江省杭州学军中学2023-2024学年高一下学期期中考试数学试卷
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8 . 已知直 三棱柱
中,侧棱
,
,
,则三棱柱
的外接球表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1baa1c07becd03537beeb09a31745cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
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解题方法
9 . 如图,一个正三棱台的上、下底面边长分别为
和
,高是
,则正三棱台的侧面积及外接球体积分别为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd6f4250ca6b1b9bce234a01f00d44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c6e55bca72a472f3bedf5896d6139b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
10 . 三棱锥
中,
,
,
,
,则三棱锥
的体积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e443c88e7f2128069787c2285ef9c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80137ee8af4684ce558242d8b3f1459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c772461aef1d9d715129636739748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-04更新
|
378次组卷
|
2卷引用:浙江省宁波市镇海中学2023-2024学年高一下学期期中考试数学试卷