Question

choose the correct answer. which two variables are used to find the density of a substance? length and width mass and volume

Explanation:

Density is defined as mass per unit volume, so the formula for density is $
ho = \frac{m}{V}$, where $
ho$ is density, $m$ is mass, and $V$ is volume. Length and width are used for calculating area or volume of some shapes but not for density. So the variables to find density are mass and volume.

Answer:

mass and volume