About 1.15 million people live in a circular region with a population density of about 18,075 people per square kilometer. Find the radius of the region. Round your answer to th…

Question

asked Feb 16, 2019 215k views

1 Answer

Lordhong · Answer 1 · 2019-02-20T23:18:04+0000

Step 1

Find the total area

Total area=(1,150,000/18,075)=63.62 square kilometer

The area of a circle is equal to

$A=\pi * r^(2) \\ 63.62= \pi * r^(2)\\r=√((63.62/\pi)) \\r=4.5\ km$

therefore

the answer is

$4.5\ km$