nguyenvanhungdepzai nguyenvanhungdepzai

16-12-2022
Mathematics

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Người ra ghép 6 hình tam giác đều mỗi tam giác có diện tích 12m
^{2} thành một hình bình hành
a, Tính diện tích hình bình hành ABCD
b,Tính diện tích hình thang cân ABCE
c,Tính diện tích hình thoi AFCE

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