如图,在
,将
绕点O逆时针旋转至
,点
在
的延长线上,则边
扫过区域(图中阴影部分)的面积为______
.(结果保留π)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffcc95b839587cc37d60b4e2a8919b5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff36ac07c45c8d03cf3b7d8739c517ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952d76cb0e44fd78b9bdaa63110cdaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/f09c2f0d-fb35-4fef-aaa6-849c7e8265d7.png?resizew=153)
更新时间:2023-03-16 21:35:36
|
【知识点】 求图形旋转后扫过的面积
相似题推荐
填空题
|
适中
(0.65)
真题
名校
【推荐1】如图,C为半圆内一点,O为圆心,直径AB长为2 cm,∠BOC=60°,∠BCO=90°,将△BOC绕圆心O逆时针旋转至△B′OC′,点C′在OA上,则边BC扫过区域(图中阴影部分)的面积为_________ cm2.
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐2】将
绕着点
顺时针旋转
,得到
,
厘米,
厘米,旋转过程中线段
扫过的面积为______________ 平方厘米(计算结果保留
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474e3172e07e060abe15d6ffeffd214e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/13/55fffacc-a43c-4e4b-a88f-d6956015a249.png?resizew=146)
您最近一年使用:0次