Answer
Density = $\frac{mass}{volume}$ .
The volume of a cylinder is the area of the circular endcap multiplied by its height.
$$Density = \frac {5 kg}{\pi (3 cm)^{2} \times (10 cm)} = 17.7 \frac{g}{cm^{3}}$$.
Work Step by Step
This is discussed on page 229.
