如图,透明的圆柱形容器(容器厚度忽略不计)的高为
,底面周长为
,在容器内壁离容器底部
的点B处有一饭粒,此时一只蚂蚁正好在与点B相对容器外壁,且离容器上沿
的点A处,则蚂蚁吃到饭粒需爬行的最短路径是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689ff84e2d7f52c7446ef789a54557da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19daa2b38e3a52bd7096d235c843110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/22/af82e1ab-db8b-4368-91bc-df57106d3f58.png?resizew=119)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-10-22 16:44:56
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【推荐1】如图,已知
的直径
的度数为
,它的另一边
交
于点
,点
为弧
的中点,点
为直径
上的一个动点,则
的最小值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/acb4dbd3-daa1-46dd-b141-26d96fe71f8d.png?resizew=147)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2efebcdea1ffa27e2c8c0a9bf3c7ae.png)
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【推荐2】如图,正方形ABCD的边长为12,点P是对角线BD上的一个动点,点E在AB上且AE=7,则△PAE周长的最小值为( )
![](https://img.xkw.com/dksih/QBM/2021/8/6/2780453784371200/2781661629612032/STEM/140ebeee-9407-4355-9aa1-0c5886021730.png)
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A.18 | B.19 | C.20 | D.7+12![]() |
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【推荐1】如图,圆柱形玻璃杯高为
,底面周长为
在杯内壁离杯底
的点
处有一滴蜂蜜,此时一只蚂蚁正好在杯外壁,离杯上沿
与蜂蜜相对的点
处,则蚂蚁从外壁
处到内壁
处的最短距离为( )(杯壁厚度不计)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/28/1e55c73c-e5ef-4b1f-a05e-499c36b5dd8c.png?resizew=196)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d1b7aa6e3693af226ef7324c37534c1.png)
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【推荐2】如图,小明想用彩色胶带装饰他的笔筒,这条胶带沿着这个圆柱的表面,从点A粘贴到点C,再从圆柱另外一面粘贴到A,已知它的底面直径
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