如图,在△ABC中,∠ACB=90°,AC=3,BC=4,点D是边AB的中点,将△ABC沿着AB平移到△DEF处,那么四边形ACFB的面积等于__________ .
![](https://img.xkw.com/dksih/QBM/2018/1/22/1865961079586816/1867470466211840/STEM/37a9365277bd4e6a81016332ed595c97.png?resizew=221)
更新时间:2018-01-24 20:41:18
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