Question

The area of South America is approximately 1.78 × 107 square kilometers. Its population is approximately 3.50 × 108 people. What is the approximate population density (people per square kilometer) of South America? Write your answer in standard form. If necessary, round your answer to the nearest hundredth.
A: 19.66 people/km^2

B: 1.97 × 10^15 people/km2

C: 5.09 people/km^2

D: 1.97 × 10^1 people/km^2

Answer 1

Answer:

A) 19.66 people/km²

Step-by-step explanation:

Given

• Area of the continent = 1.78 x 10⁷ km²
• Population = 3.5 x 10⁸ people

To Find

• Population Density

Solving

• population density is the number of people per unit area
• pd = people / area
• pd = 3.5 x 10⁸ / 1.78 x 10⁷
• pd = 1.966 x 10
• pd = 19.66 people/km²