1.Một bể nước hình hộp chữ nhật có các kích thước trong lòng bể là chiều dài 3m ; chiều rộng kém chiều dài (1,8m ); chiều cao 1,5m. Hỏi bể đó chứa được nhiều nhất bao nhiêu lít nước? ( (1 ) lít ( = 1d(m 2.Một bể cá cảnh hình hộp chữ nhật có chiều dài 1,8m; chiều rộng 0,6m và chiều cao (0,9m ) . Hỏi người ta phải đổ vào trong bể cá cảnh đó bao nhiêu lít nước để lượng nước trong bể cao 0,6m? 3.Một bể nước dạng hình hộp chữ nhật có chiều dài 2m ; chiều rộng 1,2m và chiều cao 1,4m. Hiện tại, lượng nước trong bể chiếm 2/5 thể tích của bể. Hỏi cần phải đổ thêm vào bể bao nhiêu lít nước để được đầy bể nước?

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