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1 . 如图,将矩形ABCD绕点A逆时针旋转90°至矩形AEFG,点D的旋转路径为
,若AB=2,BC=4,则阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/2020/3/25/2426972164063232/2428793453494272/STEM/4c6ae09b3dcd48628ab3fb86196452ad.png?resizew=120)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c492dd4656d4e80b8da3c4820d4f8b7.png)
![](https://img.xkw.com/dksih/QBM/2020/3/25/2426972164063232/2428793453494272/STEM/4c6ae09b3dcd48628ab3fb86196452ad.png?resizew=120)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-27更新
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456次组卷
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3卷引用:湖南省长沙市浏阳市2019-2020学年九年级上学期期末数学试题
2 . 如图,在扇形AOB中,∠AOB=90°,正方形CDEF的顶点C是
中点,点D在OB上,点E在OB的延长线上.若CF=2,则阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/2020/3/6/2413920332095488/2414570802307072/STEM/c88bebe7374a4f418f34a69bf5718d56.png?resizew=201)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c11062c3aed5447d91ed4680ebc6f06.png)
![](https://img.xkw.com/dksih/QBM/2020/3/6/2413920332095488/2414570802307072/STEM/c88bebe7374a4f418f34a69bf5718d56.png?resizew=201)
A.π﹣2 | B.2π﹣2 | C.2π﹣4 | D.![]() |
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3 . 如图,在
中,
,
,
,点
为
的中点,以点
为圆心作圆心角为
的扇形
,点
恰在弧
上,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/9d68abc3-c2fe-4a55-a4da-5103b188cb4d.png?resizew=148)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14af6bf74442941c372bb708bcdcb5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/9d68abc3-c2fe-4a55-a4da-5103b188cb4d.png?resizew=148)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 如图,在正方形ABCD中,以A为圆心,AB为半径作
,交对角线AC于点E,连结BE并延长交CD于点F,记图中分割部分的面积为S1,S2.则下列对S1与S2的大小关系判断正确的是( )
![](https://img.xkw.com/dksih/QBM/2020/1/1/2367517766041600/2368252897656832/STEM/5db1579de9bb4cf7bc5ed905114c3c0e.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7e72f9d096b7ff860a76ebe8edb313.png)
![](https://img.xkw.com/dksih/QBM/2020/1/1/2367517766041600/2368252897656832/STEM/5db1579de9bb4cf7bc5ed905114c3c0e.png?resizew=158)
A.S1>S2 | B.S1<S2 | C.S1=S2 | D.与正方形ABCD的边长有关 |
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5 . 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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名校
6 . 如图,将半径为1,圆心角为120°的扇形OAB绕点A逆时针旋转一个角度,使点O的对应点D落在弧AB上,点B的对应点为C,连接BC,则图中CD、BC和弧BD围成的封闭图形面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/c8fe2322-f718-493d-85cc-83ea9ffa8447.jpg?resizew=112)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/c8fe2322-f718-493d-85cc-83ea9ffa8447.jpg?resizew=112)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-06-21更新
|
549次组卷
|
6卷引用:云南省红河州蒙自市2019届九年级初中学业水平模拟考试试题(三)
7 . 如图,在Rt△ABC中,∠BAC=90°,且AB=3,BC=5,⊙A与BC相切于点D,交AB于点E,交AC于点F,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/2019/3/30/2171829312454656/2176152170930176/STEM/6f0ab50bc8ea4fc3ac7ac24aea7d9e85.png?resizew=111)
![](https://img.xkw.com/dksih/QBM/2019/3/30/2171829312454656/2176152170930176/STEM/6f0ab50bc8ea4fc3ac7ac24aea7d9e85.png?resizew=111)
A.12﹣![]() | B.12﹣![]() | C.6﹣![]() | D.6﹣![]() |
您最近一年使用:0次
2019-04-10更新
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530次组卷
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2卷引用:【校级联考】四川省凉山市金阳县2019届九年级中考数学模拟试卷
8 . 点C是半径为1的半圆弧AB的一个三等分点,分别以弦AC、BC为直径向外侧作2个半圆,点D、E也分别是2半圆弧的三等分点,再分别以弦AD、DC、CE、BE为直径向外侧作4个半圆.则图中阴影部分(4个新月牙形)的面积和是( )
![](https://img.xkw.com/dksih/QBM/2018/11/29/2086040059363328/2089799218429952/STEM/3aff6e83-fb97-419f-bfb7-ec569b19a962.png?resizew=272)
![](https://img.xkw.com/dksih/QBM/2018/11/29/2086040059363328/2089799218429952/STEM/3aff6e83-fb97-419f-bfb7-ec569b19a962.png?resizew=272)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 如图,CD是⊙O的直径,AB,EF是⊙O的弦,且AB∥CD∥EF,AB=16,CD=20,EF=12,则图中阴影部分的面积是( )
![](https://img.xkw.com/dksih/QBM/2018/11/29/2086186784317440/2089098431643648/STEM/eb95cfc07b384a2db7c8c73de03b3c1b.png?resizew=122)
![](https://img.xkw.com/dksih/QBM/2018/11/29/2086186784317440/2089098431643648/STEM/eb95cfc07b384a2db7c8c73de03b3c1b.png?resizew=122)
A.96+25π | B.88+50π | C.50π | D.25π |
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2018-12-03更新
|
847次组卷
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5卷引用:人教版九年级数学上册 第24章 《圆》 培优测试卷
人教版九年级数学上册 第24章 《圆》 培优测试卷【市级联考】山东省济宁市2018届九年级(上)期末数学试题山东省滨州市无棣县2019届九年级上学期期末考试数学试题(已下线)【万唯原创】2018年河北省中考数学-逆袭卷-逆袭特训32~34(已下线)专题3.28 《圆》全章复习与巩固(提高篇)(专项练习)-2021-2022学年九年级数学下册基础知识专项讲练(北师大版)
10 . 如图,半⊙O的半径为2,点P是⊙O直径AB延长线上的一点,PT切⊙O于点T,M是OP的中点,射线TM与半⊙O交于点C.若∠P=20°,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/2019/5/29/2214017403035648/2214339301523456/STEM/3ea3f39c89514136b47b79ec7ba59bbe.png?resizew=224)
![](https://img.xkw.com/dksih/QBM/2019/5/29/2214017403035648/2214339301523456/STEM/3ea3f39c89514136b47b79ec7ba59bbe.png?resizew=224)
A.1+![]() | B.1+![]() |
C.2sin20°+![]() | D.![]() |
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2018-11-14更新
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738次组卷
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5卷引用:【校级联考】广东省深圳市2018届十校联考中考模拟试卷(3月份)数学试题