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vinhlngthanh
2 năm trước
Diện tích của một hình thoi là 540dm2 . Một trong những đường chéo của nó bằng 4,5dm. Tính khoảng cách giao điểm của các đường chéo đến các cạnh.. Mong mn giúp em với a!!T_T 5 SAO + CTLHN NHA
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