Nguoi ta lan son phia tren can phong hinh hop chu nhat co chieu dai 9,6m chieu rong 4,5m va chieu cao 4m, tong cua ra vao va cua so la 7m2.Hoi dien tich can phai lan son la bao nhieu met vuong ? Biet rang can phong do phai lan son ca tran nha, nhung khong lan son o duoi nen.