In 1990 there were approximately 7 × 106 people living in New York City. New York City has an area of approximately 8.31 × 102 square kilometers. What was the population density of New York City in 1990? Answer in units of people/km2
The population density is the number of people divided by the area: [tex]\frac{7\times10^{6}\ people}{8.31\times10^{2}\ km^{2}}[/tex] [tex]\approx0.842\times10^{4}\ people/km^{2}[/tex] [tex]\approx8.42\times10^{3}\ people/km^{2}[/tex]
