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nguyenphuongnam
2 năm trước
Một khối hộp chữ nhật có thể tích là 480cm3 trong đó chiều dài là 8cm và chiều cao là 10cm. Khối hộp chữ nhật này được sơn tất cả các mặt. Hỏi có bao nhiêu khối lập phương nhỏ cạnh 1cm không sơn mặt nào biết người ta dùng khối lập phương cạnh 1cm để xếp khối hộp chữ nhật nói trên. giúp mình nhé!
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