如图,在
中,
,点O为
的中点,以点O为圆心,
为半径作圆心角为
的扇形
,则图中阴影部分的面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff48413054026e883567e11bf1f41e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820567942aa98b2feaaa017fcb7790df.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712407731822592/2716811687780352/STEM/7a889313-1dbf-47ad-85f6-541794201ee0.png)
更新时间:2021-05-08 20:30:26
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【知识点】 求其他不规则图形的面积
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