WAEC Geography 2022 Papers

Concept:Population density measures the average number of people living in one square kilometre of land.Explanation:Population density is found by dividing the total population by the total land area.The formula is:$$\text{Population density} = \frac{\text{Total population}}{\text{Total land area}}$$Here, the total population is $75{,}000{,}000$ and the total land area is $250{,}000\ \text{km}^2$.Substitute these values into the formula:$$\text{Population density} = \frac{75{,}000{,}000}{250{,}000}$$Simplify the division by cancelling the common zeros:$$\frac{75{,}000{,}000}{250{,}000} = \frac{750}{2.5} = 300$$This means there are 300 persons for every square kilometre of land.Therefore, the population density is $300$ persons per $\text{km}^2$.Answer:B. 300 persons per km²