The population density is approximately 4.4 people per square mile.
Population density is the total number of persons that are living in a population per unit area.
Mathematically, population density can be calculated by using this formula:
Population density = Population size/land area
Next, we would determine the total size of geometric shape as follows;
Area of shape = 60 × (40 + 25) - (40 × 25)
Area of shape = 60 × (65) - (40 × 25)
Area of shape = 2900 square miles.
Now, we can determine the population density to the nearest tenth as follows;
Population density = 12,620/2900
Population density = 4.3517 ≈ 4.4 people per square mile.