在矩形ABCD中,已知AB=2, BC=4, 现有一根长为2的木棒 EF紧贴着矩形的边(即两个端点始终落在矩形的边上),按逆时针方向滑动一周,则木棒EF的中点P运动路径长为( )
![](https://img.xkw.com/dksih/QBM/2018/12/28/2106624288489472/2109428472143872/STEM/58d77156cc334a108a07e2bbde52072f.png?resizew=122)
![](https://img.xkw.com/dksih/QBM/2018/12/28/2106624288489472/2109428472143872/STEM/58d77156cc334a108a07e2bbde52072f.png?resizew=122)
A.12 | B.4+π | C.4 +2π | D.4-π |
更新时间:2019-01-02 19:38:04
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