Question

What is the density of a brownie the shape of a cube weighing 15 grams measuring 5 cm on a side?

Answer 1

0.12 g/cm³

Explanation:

Density is the ratio of mass to volume. The volume of the brownie is the cube of its side dimension:

V = s³ = (5 cm)³ = 125 cm³

Then the density is ...

ρ = M/V = (15 g)/(125 cm³) = 0.12 g/cm³

The density of the brownie is 0.12 g/cm³.