Question

About 1.75 million people live in a circular region with a 15-mile diameter. Find the population density in people per square mile. Round your answer to the nearest whole number.

Answer 1

The diameter of the circular region is 15 miles

that gives radius = 7.5 miles

Now,

Area = π r² = 3.14 * 7.5* 7.5

= 176.625 mile²

Population density = number of people / land area

this is =
`(1750000)/(176.625) = 9907.997`

Now rounding off to nearest whole number, we get 9908

So, there are 9908 population living in per square mile.

Answer 2

The diameter of the circular region is 15 miles

that gives radius = 7.5 miles

Now,

Area = π r² = 3.14 * 7.5* 7.5

= 176.625 mile²

Population density = number of people / land area

this is =
`(1750000)/(176.625) = 9907.997`

Now rounding off to nearest whole number, we get 9908

So, there are 9908 population living in per square mile.