单选题 适中0.65 引用7 组卷399
如图,⊙O的半径为2,∠AOB=90°,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/2e8d9863-e9b1-4d95-a6ac-2ebf6a1b9772.png?resizew=164)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/2e8d9863-e9b1-4d95-a6ac-2ebf6a1b9772.png?resizew=164)
A. | B.π | C.2π | D.4π |
20-21八年级下·重庆·期末
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如图,是某公园的一角,∠AOB=90°,
的半径OA长是6米,点C是OA的中点,点D在
上,CD∥OB,则图中草坪区(阴影部分)的面积是( )
![](https://img.xkw.com/dksih/QBM/2014/7/30/1573741840302080/1573741846110208/STEM/2873083f561944bcb2727f80a32d0b44.png)
![](https://img.xkw.com/dksih/QBM/2014/7/30/1573741840302080/1573741846110208/STEM/09e88c780b4b422f8651da25d56503b6.png)
![](https://img.xkw.com/dksih/QBM/2014/7/30/1573741840302080/1573741846110208/STEM/09e88c780b4b422f8651da25d56503b6.png)
![](https://img.xkw.com/dksih/QBM/2014/7/30/1573741840302080/1573741846110208/STEM/2873083f561944bcb2727f80a32d0b44.png)
A.(3π+![]() | B.(![]() ![]() | C.(3π+9![]() | D.(![]() ![]() |
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