The key identifiers with related rates problems are in the question you are being asked, and the information you are being given to start with.
An example of language you might see could be, “The height is moving at $\textcolor[rgb]{}{5}\frac{\textcolor[rgb]{}{m}}{\textcolor[rgb]{}{s}}$, how fast is the volume changing?”
An example of language you might see could be, “At the moment the length is $\textcolor[rgb]{}{5}\textcolor[rgb]{}{m}$ and the height is moving at $\textcolor[rgb]{}{5}\frac{\textcolor[rgb]{}{m}}{\textcolor[rgb]{}{s}}$, how fast is the volume changing?”