名校
解题方法
1 . 在三棱锥
中,
与
均为边长为1的等边三角形,
,四点在球
的球面上,当三棱锥
的体积最大时,则球
的表面积为______ .
![](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/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a0889f0f80987c260cce05be4c84b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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2020-12-28更新
|
196次组卷
|
2卷引用:江苏省南通市海安高级中学2020-2021学年高三上学期10月第一次阶段检测数学试题
名校
解题方法
2 . 三棱锥
中,
,
,
的面积为
,则此三棱锥外接球的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6f8318ad4cd5a211c7bfbbd771ce67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc223bc59d4c5b1c99f811e4bded9783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68c1d20a422a363e356a160f096503c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-12-28更新
|
418次组卷
|
3卷引用:江苏省南京师大附中2020-2021学年高三上学期12月模拟数学试题
名校
3 . 已知三棱锥
的顶点P在底面的射影O为
的垂心,若
的面积
,
的面积
,
的面积
,满足
,且三棱锥
的外接球半径为3,则
的面积之和的最大值为_________ .
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f16c359cc51ec0325c7c31f15c979e19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0cbf0604c1a9bdb08cc54fa6821fa06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7f7d052456974eaf01abe712167e63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b2ac52d6255d30ec7430fe23c809e7.png)
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2020-12-27更新
|
1525次组卷
|
3卷引用:江苏省南京市金陵中学2020-2021学年高三上学期12月阶段性测试数学试题
江苏省南京市金陵中学2020-2021学年高三上学期12月阶段性测试数学试题湖南省怀化市第三中学2020-2021学年高一下学期期中数学试题(已下线)第11讲空间直线、平面的垂直(核心考点讲与练)-2021-2022学年高一数学考试满分全攻略(人教A版2019必修第二册)(原卷版)
名校
4 . 三棱锥
的所有顶点都在球
的球面上.棱锥
的各棱长为:
,
,则球
的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a82fa55942cc69f012ae8b89a59a52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-12-27更新
|
1269次组卷
|
6卷引用:广东省六校联盟2021届高三上学期第二次联考数学试题
20-21高三上·江苏南通·阶段练习
名校
解题方法
5 . 如图,在四棱锥
中,底面
是边长为
的正方形,三角形
为正三角形,且平面
平面
,则四棱锥
外接球的表面积为_________ .
![](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/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/2020/12/24/2621025229553664/2622614388858880/STEM/c9218810db3b4ab7b446974e4b891d50.png?resizew=191)
您最近一年使用:0次
解题方法
6 . 棱长为6的正四面体
与正三棱锥
的底面重合,若由它们构成的多面体
的顶点均在一球的球面上,则正三棱锥
的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42020cfacd62b300cad053981bab9e0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42020cfacd62b300cad053981bab9e0b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-12-26更新
|
192次组卷
|
2卷引用:江苏省如东高级中学、丹阳高级中学、如皋中学2020-2021学年高三上学期12月三校联考数学试题
名校
解题方法
7 . 在三棱锥P-ABC中,侧棱PA⊥底面ABC,∠BAC=120°,AB=AC=10且PA=2BC,则该三棱锥的外接球的体积为___________ .
您最近一年使用:0次
8 . 如图,正方体
的棱长为1,点
是侧面
的一个动点,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2020/12/20/2618429077684224/2620959013535744/STEM/f458644bd1e9448087ff3badbd7fde03.png?resizew=227)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://img.xkw.com/dksih/QBM/2020/12/20/2618429077684224/2620959013535744/STEM/f458644bd1e9448087ff3badbd7fde03.png?resizew=227)
A.点![]() ![]() |
B.点![]() ![]() ![]() |
C.三棱锥![]() ![]() |
D.在线段![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
解题方法
9 . 如图,在直三棱柱
中,
,
,
、
分别为
,
的中点,过点A、
、
作三棱柱的截面
,则下列结论中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/ad0c4fa9-4252-40c5-99bf-690d42adf883.png?resizew=144)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693458ac028c5e0a801dfc6777a7a118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/ad0c4fa9-4252-40c5-99bf-690d42adf883.png?resizew=144)
A.![]() |
B.直线![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.![]() ![]() |
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10 . 在三棱锥
中,底面ABC是以AC为斜边的等腰直角三角形,且
,
,PB与底面ABC所成的角的余弦值为
,则三棱锥
的外接球的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603de302cb6fa781b16a0be8c828c7a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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