Question

The population of Colorado in 2009 was about 5,024,748. The land area can be approximated by a rectangle with coordinates (0, 0), (369, 0), (369, 281), and (0, 281), with each unit on the coordinate plane being 1 mile. What was the population density of Colorado in 2009?

Answer 1

The approximate area of Colorado is

369 × 281 = 103,689 square miles

So the population density of Colorado in 2009 was

5,024,748 people / 103,689 square miles = about 48.46 people per square mile

(about 48 people per square mile)