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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

Sagot :

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
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