The answer is "anything". Look around you, and pick any object - it will have both mass and volume.
Anything that has mass and volume is considered matter. Matter is anything that occupies space and has mass, which includes all substances found in the universe.
What is anything that has volume and mass
The density is the ratio mass/volume.
Matter
Matter
It is Matter
Matter is anything that has mass and volume (takes up space).
Anything that has mass and volume is matter. Metals have mass and volume, therefore they are matter.
Mass times volume isn't a formula for anything. You may be confused with mass divided by volume, which is the formula for density.
Volume is the amount of space that something occupies.
Matter is anything that has volume and mass.
Matter is anything having mass and occupying space (has volume).