Question

The population of Miami-Dade County in Florida in 2010 was 2, 496, 435 and the land area was 1, 898 square miles. The population increased by 7.9% in 2015. Part 1: To the nearest whole number, find the population density, in people per square mile, for Miami- Dade County in 2015

Answer 1

The population density of the city which is the ratio of population size and the land area is 1419 people per square mile.

• The initial population = 2496435
• The percentage increase in population = 7.9%

• Land Area = 1898 mi²

The population of the city on 2015 can be calculated thus :

• (1 + percent increase) × initial population

• (1 + 0.079) × 2496435 = 2693653.365 people

The population of a city is calculated using the relation :

• Population density = Population / Land Area

• Population density = 2693653.365/1898

• Population density = 1419.21

Therefore, the population density is 1419 people per square mile.

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