1 . 如图是某商业小区的平面设计图,初步设计该小区为半径是200米,圆心角是120°的扇形
.
为南门位置,
为东门位置,小区里有一条平行于
的小路
,若
米,则圆弧
的长为___________ 米
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f756a2246a2a59021639c25d1ee12ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/570f5003-06b4-4e7a-9340-0ba1ccfca427.png?resizew=169)
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2021-04-25更新
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9卷引用:湖南省长沙市雅礼中学2021届高三下学期高考热身训练数学试题