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Thuyphuongpttp13
2 năm trước
một bức tượng bằng nhôm có thể tích 650 cm³ và trọng lượng bằng 13,5N . hãy cho biết bức tượng trên đặc hay rỗng , vì sao?tính thể tích của phần rỗng , nếu có?
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