Respuesta :

Answer: It shows a type of matter in the tube

mass is how much material in an object and weight is how much it weighs

20

Explanation:  use its length instead of height: pipe volume = π * radius² * length , where radius = inner diameter/2 . The volume of a pipe is equal to the volume of a liquid inside (if a pipe is fully filled with it).

everything is made of matter. mass is how much of something there is and weight is how much that mass is affected by gravity? and it would be like 19