![](https://i.imgur.com/FRHqRoz.jpg)
[請問] 一題數學題
![](https://i.imgur.com/FRHqRoz.jpg)
請問圖中的灰色面積?
請問這算的出來嗎?
如果不行,可說明原因~
想了很久算不出來~
拜託各位了~
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