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dothuy100889
2 năm trước
Người ta xếp đầy những hình lập phương có cạnh 2cm vào hình hộp chữ nhật có chiều dài = 1,8dm ; chiều rộng = 1,2dm ; chiều cao = 1,6dm. Tính số hình lập phương người ta xếp.
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