如图,分别以等边三角形ABC的三个顶点为圆心,以边长为半径画弧,得到的封闭图形是莱洛三角形,若AB=2,则莱洛三角形的面积(即阴影部分面积)为_______ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/643c7c2f-6b70-4b04-8317-cebf5dd25fec.png?resizew=133)
2019·湖北咸宁·一模 查看更多[6]
更新时间:2020-04-03 20:32:12
|
相似题推荐
填空题
|
适中
(0.65)
【推荐1】如图,在矩形
中,
,以
为圆心,
的长为半径画弧,交
于点
.则图中阴影部分的面积为______ .(结果保留
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a1aa8dcd153631b64cba79062eb892a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/b290f0f5-c16f-4966-924e-9494a498dd1e.png?resizew=156)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐2】如图,AC的半圆O的一条弦,将弧AC沿弦AC为折线折叠后过圆心O,图中阴影部分的面积为
,则⊙O的半径为 ___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/2021/12/16/2873946578804736/2873982779088896/STEM/d7d4b3e51efc4d53bdaaa2dfac8b59fc.png?resizew=168)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐1】如图,在扇形
中,
,
,则阴影部分的面积是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b9931cfb6a0ba33cb6e11e569a8cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://img.xkw.com/dksih/QBM/2022/12/6/3125063131119616/3127802724220928/STEM/3476a9fbc00b4ae09f82d52fa045e199.png?resizew=107)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图,半圆O中,C为半圆O上一点,AB为直径,∠ABC=60°,以OA为直径作半圆D,若AB=4,则图中阴影部分的面积为_____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/f06f14b1-664e-4cf7-8cfd-8f864a4bff00.png?resizew=143)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐1】如图,在
中,
,
.以
为直径的
交
于点D,过点D作
的切线交
于点E.若
的半径为2,则阴影部分的面积为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐2】如图,在矩形ABCD中,
,以点C为圆心,以CB的长为半径画弧交AD于E,点E恰好是AD中点,则图中阴影部分的面积为__________ .(结果保留
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/27/be0418ac-696d-464b-b2b7-02ef255234f2.png?resizew=152)
您最近一年使用:0次