马面裙(图1),又名“马面褶裙”,是我国古代女子穿着的主要裙式之一,将图1中的马面裙抽象成数学图形如图2中的阴影部分所示,
和
所在圆的圆心均为点O,且点A在
上,点D在
上,若
,则该马面裙裙面(图2中阴影部分)的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f9353ca110c8b81561455b232dbc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8589805d894eb1972c50b5e5c1069e1e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-14 20:12:32
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【知识点】 求其他不规则图形的面积
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【推荐1】如图,以边长为2的等边△ABC顶点A为圆心、一定的长为半径画弧,恰好与BC边相切,分别交AB,AC于D,E,则图中阴影部分的面积是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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较易
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【推荐2】如图,
是
的直径,半径
的垂直平分线交
于
,
两点,
,
.则阴影部分的面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/470e4b30-e724-4541-a821-a739f777d52f.png?resizew=141)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68e744f480e11f588570c5d6738799f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4836945f324c29ef818b423bcc017a93.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/470e4b30-e724-4541-a821-a739f777d52f.png?resizew=141)
A.![]() | B.![]() | C.![]() | D.![]() |
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