如图,某玩具品牌标志由半径为
的三个等圆构成,且三个等圆
,
,
相互经过彼此的圆心,则图中三个阴影部分的面积之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0385df6c7f8ee7ab503b6ed35933695b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd73875650e1538c4c61d5e16d3db29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e86193eb11015543ddb6cc7ef8f26d.png)
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更新时间:2024-05-22 10:28:31
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【推荐1】如图,两个半径为
,圆心角为
的扇形
和扇形
叠放在一起,点
在弧
上,四边形
是正方形,则阴影部分的面积等于( )
![](https://img.xkw.com/dksih/QBM/2018/10/31/2065529191694336/2067868785410048/STEM/14095257cd5b4addb3df4e13f5a92733.png?resizew=99)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12d93bd1130088b622602a6c21c9c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07f719a7d4b789c9918e927985eab80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad04231ba905e9e705a0234f204914cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e45c06ab1faef28c501da9b23897915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf6101c529b7868bc1c2fd46aca16bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31f08a6dc3c6a8f8de0b1c02ae1c345.png)
![](https://img.xkw.com/dksih/QBM/2018/10/31/2065529191694336/2067868785410048/STEM/14095257cd5b4addb3df4e13f5a92733.png?resizew=99)
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【推荐2】如图,在矩形ABCD中,
,BC=4,以点D为圆心,DA的长为半径画弧,交BC于点E,交DC的延长线于点F,则图中阴影部分的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
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【推荐1】如图所示,在
中,
,
,
.分别以
,
,
为直径作半圆(以
为直径的半圆恰好经过点
,则图中阴影部分的面积是( )
![](https://img.xkw.com/dksih/QBM/2019/9/6/2284784189784064/2284827443740672/STEM/844e2f25c36843f2a6a1d87fa7eb605e.png?resizew=139)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2019/9/6/2284784189784064/2284827443740672/STEM/844e2f25c36843f2a6a1d87fa7eb605e.png?resizew=139)
A.4 | B.5 | C.7 | D.6 |
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【推荐2】如图,扇形
中,
,
,点
为
的中点,将扇形
绕点
顺时针旋转
,得到扇形
,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/78e8b44c-4e6a-4280-9b91-3e5cc08e9bdf.png?resizew=177)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/78e8b44c-4e6a-4280-9b91-3e5cc08e9bdf.png?resizew=177)
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