math

That is assuming you are talking about the volume of a rectangular prism!

Length*Width*Height

If you are finding the volume of a cube, the answer is 3³. If you are finding the volume of a rectangular prism, it is length times width times height.

LxWxH

e.g. $${\mathtt{4}}{\mathtt{\,\times\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{2}} = {\mathtt{40}}$$

      L      W    H

Hope i Helped

You turn you Speakers/Headphones on

You do: lengthXwidthXheight!

With too much volume you go deaf haha🔊🆗

$${\mathtt{LengthWidthHeight}} = ABC$$