如图,矩形
中,
,
,以
为圆心,
为半径画弧,交
于
,则图中阴影部分的周长是( ).
![](https://img.xkw.com/dksih/QBM/2019/7/15/2247261698293760/2248633744023552/STEM/fe51245def6d41e585c3101daa6fbcea.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2019/7/15/2247261698293760/2248633744023552/STEM/fe51245def6d41e585c3101daa6fbcea.png?resizew=157)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2019-11-19 14:43:38
|
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名校
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