Problema Solution
In 1900, a certain country's population was
72,989,858 and its area was 2,900,735 square miles. Find the population density of the country, to the nearest tenth, expressed in people per square kilometer.
Answer provided by our tutors
Population density is a measurement of population per unit area.
First we will convert the square miles into square kilometers:
1 mi = 1.60934 km
1 mi^2 = (1.60934)^2 km^2
2,900,735 mi^2 = 2,900,735*(1.60934)^2 km^2
Now the density in people per square kilometer is:
72,989,858 / 2,900,735*(1.60934)^2 = 65.2 people per km^2