一酒精消毒瓶如图1,
为喷嘴,
为按压柄,
和
为导管,其示意图如图
,
,
,
.当按压柄
按压到底时,此时
(如图3).
旋转到
过程中扫过的面积;
(2)求点
到直线
的距离(结果精确到
)(参考数据:
,
,
,
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa7c4113b1a0118f5ad538d065b1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f71a52438196c3aca604fa927be8e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f4e29e96aa6d1b59d25a7c5cd90de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243ae02179073cb2c689adc223b62cd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b435d7fc33860ae191f9111d880b40.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12563a814f36d18225f411c4561b0404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb226c755ff8ddecfa78380c208ebb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8524de2495bd92f9726b178b49416e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56606e332e4578c9435fcccb4067260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4495c5cdf6591c91e73436ce69f1288e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9541366f8c9d1318f7eb28ba4d26400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f201a5ea2d553ff7c0808d5167fdab97.png)
更新时间:2024-05-11 09:48:23
|
相似题推荐
解答题-作图题
|
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【推荐1】如图,方格纸中的每个小方格都是边长为1的正方形,
的顶点都在格点上,请完成下列任务(在网格之内面图):
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964567210942464/2968589130719232/STEM/a2f4cbc1-c644-4a2d-8d11-9cead7fd9e43.png?resizew=309)
(1)请画出
绕点C按顺时针方向旋转90°后得到的
;线段AC旋转到
的过程中,所扫过的图形的面积是_____;
(2)以点O为位似中心,位似比为2,将
放大得到
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964567210942464/2968589130719232/STEM/a2f4cbc1-c644-4a2d-8d11-9cead7fd9e43.png?resizew=309)
(1)请画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
(2)以点O为位似中心,位似比为2,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
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【推荐2】我们把平面直角坐标系中,三个顶点都在格点上的三角形称为格点三角形.如图所示,
的三个顶点坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/2dbe4b77-dd58-4623-9562-699301db5969.png?resizew=227)
(1)把
绕原点O顺时针旋转
,得到
,请你在网格中画出
,并直接写出
的坐标是(_____,______);
(2)求线段
在旋转过程中扫过的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d521c9bf37ce287bc559b016d79e1101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812f75691c1b7e1062c11aeabf1e8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a35a1cae2f00184e4a4236b63afc5b5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/2dbe4b77-dd58-4623-9562-699301db5969.png?resizew=227)
(1)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
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【推荐1】2023年的政府工作报告中传递出文旅发展新动态,陕西某市政府积极响应,对辖区内的景点设施和交通等硬件进行改造和升级,提升消费者的满意程度.如图,该区有A,B,C,D四个景点,景点A,D,C依次在东西方向的一条直线上,景点B在景点D的正北方向,且景点C与景点D的距离为
,现有公路
,
,
,
,已知
,
.
(1)求公路
的长度;
(2)市政府准备在景点C,B之间修一条互通大道(即线段
),并在大道
上的E处修建一座凉亭方便游客休息,同时D,E之间也修建一条互通大道(即线段
),且
.若修建互通大道
,
的费用均是每千米17万元,请求出修建互通大道
,
的总费用是多少万元?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f971d44effe601c7244f7bcde43b863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dcfcb3705b261cdaa2291515d921fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bdca729222cd8fe0aea6fd602a86fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/8fe1a930-de34-4ff0-80e3-8f33b75cd18c.png?resizew=212)
(1)求公路
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)市政府准备在景点C,B之间修一条互通大道(即线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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【推荐2】2022年
月
日,合肥古逍遥津公园摩天轮“庐州之眼”正式开放,对外营业.该摩天轮静止时最高点
到地面的距离为
米,最低点
到地面的距离为
米,点
是摩天轮的圆心,
是其垂直于地面的直径,若摩天轮匀速运行一周需要
分钟,某人在摩天轮启动前在点
处,摩天轮开启后匀速运行
秒后,求某人距离地面的高度.(结果精确到
米,参考数据:
,
,
,
,
,
.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c07cd985e255eaa7f2979dcd7cc742f.png)
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