2 A solid piece of led has a mass of $23.94\U{g}$ and a volume of
3 $2.10\U{cm$^3$}$. From these data, calculate the density of lead in
4 SI units (kilograms per cubic meter).
5 \end{problem*} % Probem 1.15
10 = \frac{23.94\U{g}}{2.10\U{cm$^3$}}
11 \cdot\frac{1\U{kg}}{10^3\U{g}}
12 \cdot\p({\frac{10^2\U{cm}}{1\U{m}}})^3
13 = \ans{11,400\U{kg/m$^3$}}