已知直三棱柱
,
、
分别为棱
、
的中点,
、
、
三点确定的平面将该三棱柱分成体积不相等的两部分,求较小部分与较大部分的体积之比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.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/5963abe8f421bd99a2aaa94831a951e9.png)
19-20高一·浙江杭州·期末 查看更多[1]
(已下线)【新东方】杭州新东方高中数学试卷329
更新时间:2020-11-08 21:03:49
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相似题推荐
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐1】如图,三棱柱
中,
底面
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2021/11/7/2846145143857152/2848929839996928/STEM/57a75b98-bb7b-4a50-92e7-e28cc4297b73.png?resizew=220)
(1)求证:
平面
;
(2)若
,
,求三棱柱
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/11/7/2846145143857152/2848929839996928/STEM/57a75b98-bb7b-4a50-92e7-e28cc4297b73.png?resizew=220)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb3f0b5d8bf98eeff66f43b7dcbb4be.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d75c94b1ef55e76a038145649e0028a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
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解答题-问答题
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适中
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【推荐2】如图,
,
是圆柱底面的圆心,
,
,
均为圆柱的母线,
是底面直径,E为
的中点.已知
,
.
![](https://img.xkw.com/dksih/QBM/2022/3/31/2948111295447040/2949052541771776/STEM/ee80771d1bd642a388eac90030eab9e1.png?resizew=214)
(1)证明:
;
(2)若
,求该圆柱的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
![](https://img.xkw.com/dksih/QBM/2022/3/31/2948111295447040/2949052541771776/STEM/ee80771d1bd642a388eac90030eab9e1.png?resizew=214)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f95a09aa385a3591facd2132dde809.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6b41e1dc67316c227b3c99f13cfdd8.png)
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【推荐1】如图,四棱锥
中,底面ABCD为矩形,点E在线段PA上,
平面BDE.
求证:
;
若
是等边三角形,
,平面
平面ABCD,四棱锥
的体积为
,求点E到平面PCD的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0f2891147526d06af8d1ea41c9015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1d28454646730517cec5690e1f8074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9026fbd7897d459b4d559a4b99f2e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6602a9e044cd0719f0380ae97aff6a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebbb79892c8cb8871a08437acc09bc80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e0e8c3310c88ac5b66503f39e07d97.png)
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【推荐2】已知底面为正方形的四棱柱
,
,
,E,F,H分别为
的中点,
的面积为
, P为直线
上一动点且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/293a4ba34fd6bc6f67f79973655fb3c1.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/27/0833b0a3-a744-42c4-8a5a-29ceee51a262.png?resizew=167)
(1)求证:当
时,
;
(2)求多面体
的体积;
(3)当
时,求直线
与平面
夹角正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049ad1f85ee1c1352a7eb4e409253226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a62baf85689a2bb94b1ab7a2ab9863e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c66d50af1050f6b0cb01698c8d81af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/293a4ba34fd6bc6f67f79973655fb3c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048fea0efed31c67db402b5253bed27f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/27/0833b0a3-a744-42c4-8a5a-29ceee51a262.png?resizew=167)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09a88dc7dc9cd668a57138e1ec71ea2.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94569e839ce7df9c5d113255e82fa983.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2f2d7c81cb44416bcdf59419637682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6188dd1bd2be736144956d4aa632c239.png)
您最近一年使用:0次