如图,矩形ABCD的边AB=1,BC=2,以点B为圆心,BC为半径画弧,交AD于点E,则图中阴影部分的面积是( )
![](https://img.xkw.com/dksih/QBM/2019/4/10/2179452396576768/2183897766862848/STEM/cfd591c4735f4ef3855ebd59200e2af1.png?resizew=166)
![](https://img.xkw.com/dksih/QBM/2019/4/10/2179452396576768/2183897766862848/STEM/cfd591c4735f4ef3855ebd59200e2af1.png?resizew=166)
A.![]() ![]() | B.2![]() |
C.![]() ![]() | D.2﹣![]() |
2019·湖北襄阳·一模 查看更多[4]
更新时间:2019-04-17 18:12:17
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【知识点】 求其他不规则图形的面积
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适中
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【推荐1】如图,从
点引
的两切线
、
,
、
分别为切点,已知
的半径为3,
,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/20/055544e2-a2a7-4c85-b743-9c2470227fea.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d275361d88cef4f9f190e441810129e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/20/055544e2-a2a7-4c85-b743-9c2470227fea.png?resizew=162)
A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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适中
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【推荐2】如图,
是
的直径,点
在
上,点
在
的延长线上,已知
若
的半径是
,
,则阴影部分的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86f5b6f94c1d0edfc3c333e65ac81123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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