1 . 如图,点A,B是半径为2的⊙O上的两点且
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1680cbefbddcaa13b2e3df8eab7d383.png)
A.圆心O到![]() ![]() | B.在圆上取异于A,B的一点C,则![]() ![]() |
C.取![]() ![]() | D.以![]() ![]() |
您最近一年使用:0次
2023-05-10更新
|
271次组卷
|
4卷引用:2023年浙江省杭州市桐庐县中考一模数学试题
2 . 如图,扇形
的圆心角
,
,将扇形
沿射线
平移得到扇形
,
与
相交于点C,若点C为
上靠近点A的三等分点,则阴影部分的面积为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5784ea22dbd90af6cdceae43f80a22e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a99044cdedf9e67bffd16a7eeeadf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a633df6d1b15deeab2acd9040c7177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6637859805b7b01f7a9a64771563406e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/3cddfdbd-0050-4154-a611-8e64b055b4c9.png?resizew=189)
您最近一年使用:0次
2023-05-04更新
|
182次组卷
|
2卷引用:2023年河南省济源市中考一模数学试题
3 . 如图,分别以边长为4的等边三角形
的三个顶点为圆心,以4为半径作弧,三段弧所围成的图形是一个曲边三角形,若圆O是
的内切圆,则阴影部分面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/27/997231cf-ab29-4f88-bf91-41b8cbdca0df.png?resizew=138)
您最近一年使用:0次
4 . 预警三角标志牌用于放置在车道上,告知后方来车前有停置车辆,如图所示
所示
贝贝想制作类似此标志的图形,先使用反光材料设计一个物件,如图
所示,其中四边形
为长方形,
、
分别以
、
为直径的半圆,且灰色部分为反光区域
接着,将三个图
的物件以图
的方式组合并固定,其中固定点
、
、
皆与半圆的圆心重合,且各半圆恰好与长方形的长边相切,而在图
左下方的局部放大图中,
、
皆为其切点,
、
皆为直径.
请根据上述资讯,回答下列问题:
(1)图
中
的度数为多少?
(2)根据图
的组合方式,求出可看见的反光区域面积为多少?请详细解释或完整写出你的解题过程,并求出答案.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dacb04fa29178c0af4353e4369a7e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/8923a1db-e7a9-4566-97c6-4b1997cef7ee.png?resizew=629)
请根据上述资讯,回答下列问题:
(1)图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a73cccf222ee3fad9c27ef7e7fefc4.png)
(2)根据图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
您最近一年使用:0次
5 . 如图,在正方形
中,以A为圆心,作半径为4的圆心角是
的弧,且这条弧恰好经过B、D两点.
的一条切线与
分别交于M、N.求图中阴影部分面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6ffb78dad3375efa3b08ab518553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6612c697aa43a72115e5dce1106c0557.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/00c64754-ac67-4d89-97c7-e902a76765ed.png?resizew=188)
您最近一年使用:0次
6 . 如图所示,
中,
,点
在
上,以
为圆心的半圆分别与
相切于
两点,且
的长度为
,则图中的阴影部分面积为 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cf90c8a85d9e95cffb7f5c867f8e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833ee84968e2c903b6350c23943b4fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ae728c7be0f0cf78711f3fa5ccccf30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67fb457e8ac0d3ac35e1c668ea138f91.png)
您最近一年使用:0次
2023-03-28更新
|
259次组卷
|
3卷引用:2023年山东省菏泽市成武县育青中学中考一模数学试题
7 . 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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3dfcd8aff269dd5aba398816490c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a633df6d1b15deeab2acd9040c7177.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/78e8b44c-4e6a-4280-9b91-3e5cc08e9bdf.png?resizew=177)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-03-24更新
|
293次组卷
|
5卷引用:浙江省台州市椒江区2022-2023学年九年级上学期期末数学试题
浙江省台州市椒江区2022-2023学年九年级上学期期末数学试题2022-2023学年浙江省台州市椒江区九年级上学期期末数学试题(已下线)数学(山西卷)-学易金卷:2023年中考考前押题密卷(含考试版、全解全析、参考答案、答题卡)(已下线)九年级数学期末模拟卷01(浙江专用)(浙教版九年级上册+下册全部)-学易金卷:2023-2024学年初中上学期期末模拟考试(已下线)专题03 垂径定理、圆周角定理、弧长与扇形面积等圆的性质及其应用五大题型-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(浙教版)
名校
8 . 某中学开展劳动实习,学生加工制作零件,零件的截面如图所示.O为圆孔及轮廓圆弧
所在圆的圆心,A是圆弧
与直线
的切点,B是圆弧
与直线
的切点,四边形
为矩形,
,垂足为C,
,
,
,
,A到直线
和
的距离均为
,圆孔半径为
,则图中阴影部分的面积为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6932dd441452ba74244c828b3fa46ae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388a975ada0e731f880a9ea5ca037841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b2332291d454751fa1d7b94fed1251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ada8e9fd2c6d6af8bb0177a07a69c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d1f6a42b01c73543f1e68daf07ef54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfad683e1ec57bac1266e8b0166722b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67f966f8f6705ca3a8916959386eaab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd5d6c0cfb272a71f867751d9d01152.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/3b3c1fd6-b0c4-4502-809f-6ea72dd37f1e.png?resizew=224)
您最近一年使用:0次
2023九年级·全国·专题练习
9 . 滹沱河岸边盛开的粉黛乱子草吸引了很多市民前来观赏,如图1是其中一处美景的俯视图,漂亮的粉黛乱子草(扇形
中的阴影部分)花开灿烂,已知扇形半径
米,
米,点P为
的中点,
上有一座供游人休息的亭子(矩形
),点H,G分别在
上,
在
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/808965fc-1910-407e-80e1-80e7b3c6c313.png?resizew=332)
(1)求粉黛乱子草的种植面积;
(2)爱思考的嘉嘉想:“这个矩形亭子的占地面积能否再大一些呢?”请你通过计算回答嘉嘉的问题;
(3)在点P处垂直于地面向上竖着一根高为
米的柱子
,在A处安装有一个自动喷水装置.水流在各个方向上沿抛物线路径落下,喷出的水流在距离
的水平距离为
米时达到最高点.当喷头A旋转时,整个粉黛乱子草刚好都能被喷出的水流覆盖.建立如图2的坐标系,求出此坐标系中抛物线水流对应的函数关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2935a591c968df92a8cdd2bf09d96452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa1b519e1c71e72fc08e9d8fc8271cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a543ee2e30e27fb47a87a092710a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc869125145c0139d92490a41bd3918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd2eac387636cb6acc92331412a59802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24706bdc4f1bd0a9b9291d792850b148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/808965fc-1910-407e-80e1-80e7b3c6c313.png?resizew=332)
(1)求粉黛乱子草的种植面积;
(2)爱思考的嘉嘉想:“这个矩形亭子的占地面积能否再大一些呢?”请你通过计算回答嘉嘉的问题;
(3)在点P处垂直于地面向上竖着一根高为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f3c9b8ef8ee06dc335e5dffa45931c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
您最近一年使用:0次
10 . 如图,在
中,
,O在斜边
上,且
,连接
,并延长至点D,使
,以点O为圆心、
为半径画圆,交
的延长线于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/c750a38c-8a30-4436-9844-db44b1319d8d.png?resizew=156)
(1)求证:
.
(2)已知
,
.
①连接
,过点B作
于点F,求
的长;
②求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb0cb135b77b10612f470c5035dabd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e34e77949731b46960349976c14d9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/c750a38c-8a30-4436-9844-db44b1319d8d.png?resizew=156)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a55b6ce55e67f6e95e616eaf1ca3f6f8.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
①连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbfc35fc915ac7d4dc017e60ccdecbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
②求图中阴影部分的面积.
您最近一年使用:0次
2023-02-24更新
|
71次组卷
|
3卷引用:专题05 正多边形与圆、弧长及扇形的面积、圆锥的侧面积(经典基础题4种题型+优选提升题)
(已下线)专题05 正多边形与圆、弧长及扇形的面积、圆锥的侧面积(经典基础题4种题型+优选提升题)江西省南昌市雷式学校2023-2024学年九年级上学期月考数学试题贵州省黔西南布依族苗族自治州2022-2023学年九年级上学期期中数学试题