Final answer:
To convert the population density of Rio de Janeiro from people per square kilometer to people per square meter, divide the figure by 1,000,000. This results in a population density of 0.005377 people per square meter.
Step-by-step explanation:
The student has asked about converting the population density of Rio de Janeiro from people per square kilometer to people per square meter. To convert the population density from people per square kilometer to people per square meter, you need to recognize that there are 1,000,000 square meters in a square kilometer (because 1 kilometer is 1000 meters and the area is the square of this, so 1000 x 1000 meters).
To find the population density per square meter, you divide the density per square kilometer by the number of square meters in a square kilometer:
Population density in people per square meter = (Population density in people per square kilometer) / (Number of square meters in a square kilometer)
In this case:
Population density in people per square meter = 5377 / 1,000,000
Which equals:
0.005377 people per square meter.