Density, denoted by the symbol $\rho$, is defined as mass per unit volume. In this case, the mass of the pencil is 47.4 grams and the volume is 15.8 cubic centimeters.
Therefore, the density of the pencil is $\rho = \frac{\text{mass}}{\text{volume}} = \frac{47.4 \, \text{g}}{15.8 \, \text{cm}^3} \approx \boxed{3 \, \text{g/cm}^3}$.
A mechanical pencil has a mass of 47.4 grams. The volume of the pencil is 15.8 cubic centimeters. What is the density of the pencil?
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