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DuongTrong
1 năm trước
một bể nước dạng hình hộp chữ nhật có chiều dài là 2.5m , chiều rộng là 1,5m chiều cao là 1,2m. Bể đang chứa 1 số nước mà mực nước mà mực nước trong bể cao = 3/5 chiều cao bể tính thể tích bể tính xem cần phải đổ thêm bao nhiêu lít nước cho đầy bể (1dm khối = 1 lít)
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