如图,已知菱形ABCD的边长为4,BCD=120,以点A为圆心的半圆与BC,CD相切于点E和点F,则图中用影部分的面积为____________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/25/c1597fd2-74df-46d0-b2f6-bc458ed7c61b.png?resizew=135)
更新时间:2020-07-24 10:04:21
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