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Comments - 《問題集》 | Penana
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Comments - 《問題集》
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黑茶舍茶黑
這樣算太複雜了。
左下角45°的三個形，分兩等份便是 6 ÷ 2 = 3cm，再加 2cm 便是灰色三角形的高。
所以灰色三角形面積是 4 x (3+2) ÷ 2 = 10cm²
2 years agoReply
kelcat
@u@　歡迎小黑黑～
2 years agoReply
kelcat
。口。#　沒想到耶～

竟然有更簡單的方法…

看來大家 猜謎／算數 都比我強很多…
2 years agoReply
　
！！！

最簡單的方法！
2 years agoReply
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