Final answer:
The population density of Mbale is 37.14 people per square kilometer.
Step-by-step explanation:
Population density is calculated by dividing the total population by the total land area. In the case of Mbale, its total population is 780,000 people and the total land area is 21,000 square kilometers.
So, to calculate the population density of Mbale, you can use the following formula:
Population Density = Total Population / Total Land Area
Applying the formula, the population density of Mbale is:
Population Density = 780,000 / 21,000 = 37.14 people per square kilometer