To estimate the population densities of Singapore and Namibia, we need to divide the population of each country by its respective land area.
For Singapore:
Population = 4,987,600
Land Area = 710.2 km^2
Population Density = Population / Land Area
= 4,987,600 / 710.2
≈ 7019.28 people/km^2
So, the estimated population density of Singapore is approximately 7019.28 people/km^2.
For Namibia:
Population = 2,171,000
Land Area = 824,292 km^2
Population Density = Population / Land Area
= 2,171,000 / 824,292
≈ 2.63 people/km^2
So, the estimated population density of Namibia is approximately 2.63 people/km^2.
Please note that these are estimates as the population densities can vary within different areas of each country.