1 . 一扇形的圆心角
,半径
,则该扇形的周长为_____
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3416881a6f67d05fe6b67787047fc86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb1cf5f77754c603e1b1cb1927db4952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
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2 . 已知某扇形的圆心角为
,面积为
,则扇形的弧长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeb076bad84890e24dbdc945ad543cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f5f9251b20115e4f9bfc2005ef26f86.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-01-12更新
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624次组卷
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3卷引用:湖北省孝感市2022-2023学年高一上学期1月期末数学试题