如图,水平放置的圆柱形排水管道的截面半径是
,其中水面高度
是
.那么水面宽度
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d51b21602ca6906279ecb645bfd12fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b1fe1b971b780e443a9b13621611c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/0fa29f99-c2df-438b-9636-c9ed469e2e6a.png?resizew=135)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-03-15 05:50:06
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【推荐1】如图,在半径为5cm的⊙O中,直线l交⊙O于A、B两点,且弦AB=8cm,要使直线l与⊙O相切,则需要将直线l向下平移( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/643cc246-2763-4537-ad3b-2ccd9dd5a708.png?resizew=112)
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【推荐2】已知直角三角形的两边长分别为3和4,则斜边长为( )
A.4 | B.5 | C.4或5 | D.5或![]() |
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【推荐1】如图,⊙O的半径为5,弦AB的长为6,M是弦AB 上的动点,则OM长的最小值为()
![](https://img.xkw.com/dksih/QBM/2014/3/20/1573716172742656/1573716178821120/STEM/b914da85d1c64ab3a59dbe2bbf268682.png)
![](https://img.xkw.com/dksih/QBM/2014/3/20/1573716172742656/1573716178821120/STEM/b914da85d1c64ab3a59dbe2bbf268682.png)
A.5 | B.4 | C.3 | D.2 |
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【推荐2】如图,
是
的弦,线段
经过圆心且
,D是劣弧
上一点,若
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的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fb900d14718e4a47eb9d8a17b0dd8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/17/a2bfea3f-e747-4049-b164-a0da11719fb6.png?resizew=171)
A. ![]() | B. ![]() | C. ![]() | D. ![]() |
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