如图,在△ABC中,AB=5,AC=4,BC=3,以边AB的中点O为圆心,作半圆与AC相切,点P,Q分别是边BC和半圆上的动点,连接PQ,则PQ长的最大值与最小值的和是________ .
![](https://img.xkw.com/dksih/QBM/2019/1/15/2119143511367680/2122128521297920/STEM/a8e6e09417bc46f59f870ed27b4625e8.png?resizew=171)
更新时间:2019-01-19 23:26:35
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