如图,梯子
靠在墙上,梯子的应用
到墙根
的距离为
,梯子的顶
端
到地面的距离为
,现将梯
子的底端
向外移动到
,使梯子的底端
到墙根
的距离等于
,同时梯子的顶端
下降至
,那么
( )
![](https://img.xkw.com/dksih/QBM/2017/3/7/1638721636343808/1642279856381952/STEM/faf9c8ea6c76426891937a9c605fe3a0.png?resizew=121)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71a41641aa0d0e45a3c03d3d2c1196b.png)
![](https://img.xkw.com/dksih/QBM/2017/3/7/1638721636343808/1642279856381952/STEM/871184260cc84aa5a59f01033a68fccc.png?resizew=3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe35c9c09d1cb7c065df164ae5c62ea0.png)
![](https://img.xkw.com/dksih/QBM/2017/3/7/1638721636343808/1642279856381952/STEM/0261032a1ea5487aad93fc9ec8fae0b4.png?resizew=2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7ffb7889a31b267a85f1ea238138e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7ffb7889a31b267a85f1ea238138e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36b51b654efcff60d2d640b9b4c4471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5d54dfb9237412a7c1c00658830de6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f022b18f3b30bccee515df5e47ff00.png)
![](https://img.xkw.com/dksih/QBM/2017/3/7/1638721636343808/1642279856381952/STEM/faf9c8ea6c76426891937a9c605fe3a0.png?resizew=121)
A.小于![]() | B.大于![]() | C.等于![]() | D.小于或等于![]() |
更新时间:2017-03-12 16:49:49
|
【知识点】 求梯子滑落高度(勾股定理的应用)解读
相似题推荐
单选题
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适中
(0.65)
【推荐1】如图,一根长为2.5米的梯子斜靠在垂直于地面的墙上,这时梯子的底端B离开墙根为0.7米,如果梯子的底端向外(远离墙根方向)移动0.8米至D处,则梯子的顶端将沿墙向下移动( )
![](https://img.xkw.com/dksih/QBM/2015/12/30/1573947028946944/1573947035033600/STEM/415bf85029994820a60755d89e37aa14.png?resizew=155)
![](https://img.xkw.com/dksih/QBM/2015/12/30/1573947028946944/1573947035033600/STEM/415bf85029994820a60755d89e37aa14.png?resizew=155)
A.0.8米 | B.0.7米 | C.0.4米 | D.0.3米 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,一架2.5米长的梯子
斜靠在墙
上,这时梯足B到墙底端C的距离为0.7米,如果梯子的顶端沿墙垂直下滑0.4米,那么梯足将外移的长度是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
A.0.7米 | B.0.4米 | C.0.8米 | D.1米 |
您最近一年使用:0次