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daik36cf
2 năm trước
Cho tam giác ABC, M là điểm thuộc BC. Qua M kẻ đường thẳng song với AC,AB cắt AB,AC lần lượt tại D,E. Biết S tam giác BDM = 9cm vuông ; S tam giác MEC = 16cm vuông. Tính diện tích của tam giác ABC Help me!!!
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