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Mkng2911
2 năm trước
Một tam giác ABC có cạnh đáy 3,5m.Nếu kéo dài cạnh đáy BC thêm 2,7m thì diện tích tam giác tăng thêm 5,265 m2 .thì diện tích hình tam giác ABC đó? Giúp mik với mik cần gấp mai mik thi rồi nha.
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