Understanding Population Density Calculation

Population density is a measurement of population per unit area. It is commonly expressed as the number of people per square kilometer or square mile. This calculation helps us understand how crowded or sparsely populated a particular area is.

Formula for Population Density

The formula to calculate population density is:

Population Density $= \frac{\text{Total Population}}{\text{Total Area}}$

We can write this formula using mathematical notation as:

$\text{D} = \frac{\text{P}}{\text{A}}$

Where:

• $\text{D}$ is the Population Density
• $\text{P}$ is the Total Population
• $\text{A}$ is the Total Area

Applying the Population Density Formula

In this question, we are given the following information for a country:

• Total Population ($\text{P}$) = 450,000 persons
• Total Area ($\text{A}$) = 5000 square kilometers ($\text{km}^2$)

Now, we need to substitute these values into the population density formula:

Population Density $= \frac{450,000 \text{ persons}}{5000 \text{ km}^2}$

Step-by-Step Calculation

To calculate the population density, we divide the total population by the total area:

Population Density $= \frac{450,000}{5000}$

We can simplify this division by cancelling out common factors. We can remove three zeros from the numerator (450,000) and three zeros from the denominator (5000):

Population Density $= \frac{450}{5}$

Now, we perform the division:

Population Density $= 90$

The unit for population density in this case will be persons per square kilometer.

So, the density of population in the country is 90 persons per square kilometer.

Checking the Options

Let's look at the given options to find our calculated value:

• Option 1: 490
• Option 2: 900
• Option 3: 90
• Option 4: 450

Our calculated population density is 90, which matches Option 3.

Conclusion on Population Density

The population density of the country with 450,000 persons in a 5000 square kilometer area is 90 persons per square kilometer. This calculation demonstrates how population is distributed across a given geographic area.

Revision Table: Key Concepts for Population Density

Additional Information on Population Density Factors

Population density can vary greatly within a country or region due to various factors. Some important factors influencing population distribution and density include:

• Geography and Climate: Areas with favorable climate, fertile land, and accessible water resources tend to have higher population densities. Mountainous, arid, or extremely cold regions often have lower densities.
• Economic Opportunities: Regions with strong economies, job availability, and industrial development attract more people, leading to higher densities in urban areas.
• Historical Factors: Historical migration patterns, conflicts, and settlements can influence where populations are concentrated.
• Infrastructure: Availability of transportation, housing, utilities, and social services makes areas more habitable and can lead to higher densities.
• Government Policies: Policies related to land use, urban planning, and regional development can impact population distribution and density.

Understanding these factors helps explain why some areas are much more densely populated than others, even within the same country.