某校要举办国庆联欢会,主持人站在舞台的黄金分割点处最自然得体.如图,若舞台
的长为
,
为
的一个黄金分割点
,则
的长为(结果精确到
)( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/10/ade07c7c-9588-41bf-9048-a96aaaab04e9.png?resizew=180)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf6101c529b7868bc1c2fd46aca16bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751f74aa8918bb849dca5f2d52e067c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf6101c529b7868bc1c2fd46aca16bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0374c506ec9c1b365b6861c5b7549e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a3a3d168a18401e47576f70a692e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be49497ddac7217d834e9d72e9f17b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/10/ade07c7c-9588-41bf-9048-a96aaaab04e9.png?resizew=180)
A.6.7m | B.7.6m | C.10m | D.12.4m |
更新时间:2019-01-30 18:14:09
|
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(0.94)
【推荐1】已知A、B两地的实际距离AB=5km,画在图上的距离=2cm,则该地图的比例尺为( )
A.2:5 | B.1:2500 | C.1:250000 | D.250000:1 |
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