如图,有一位工人,想测量一面墙上点A距离地面的的高度
,他找来一根竹竿,斜靠在墙上,顶端刚好到达点A处,经测量竹竿的长度为
,底端B远离墙的距离
为
,求点A距离地面的的高度
是多少m?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea92883fe24b097c9a881ef8c92eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7854968bbf6576a1fd9926ee0d4d63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/57334be5-e4f0-4323-93ad-92c42a33647b.jpg?resizew=103)
更新时间:2023-11-18 12:28:14
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【推荐1】如图,Rt△ABC中,∠ABC=90°,点D,F分别是AC、AB的中点,CE∥DB,BE∥DC.
(1)求证:四边形DBEC是菱形;
(2)若AD=6,DF=2,求四边形DBEC的面积.
(1)求证:四边形DBEC是菱形;
(2)若AD=6,DF=2,求四边形DBEC的面积.
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721353208086528/2786043325988864/STEM/7e1af40f-3078-4baf-8d86-47dfdb80f885.png)
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【推荐2】菱形
在平面直角坐标系中的位置如图所示,
交y轴于点D,连接
,交
于点E.已知点
,
,求点B的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.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/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998329f9cdb86f5d60d7d5d70fc3781e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/1/bec73d0b-4f73-4d32-be4a-d4a7f7ac1485.png?resizew=188)
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