Just remember folks...the flu (influenza) is an upper respiratory infection...nausea and vomiting are not symptoms of the flu . ...So many times people say they have the flu but it really is not..
Length x width x height equals volume. * * * * *. But only if the object in question is a cuboid (rectangular prism). Length*Width*Height for a sphere, for example, does not equal its volume.
What comes first length or width? Do a square have length width and height? A cube (3D) has length, width and height. A square (2D) drawn on a  piece of paper only has length and width - in the case of a square,  all sides have the same length. Making the world better, one answer at a time.