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
density area people
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
Let A = area of the circular region
Let r = radius of the circular region
A= ?
A=1500000 people×1 km218075 people=150000018075 km2=82.9875518672 km2
r= ?
π r2=Ar2=Aπr=√Aπ=√82.9875518672π=√26.4157581895r=5.13962626944 km
The radius of the region is ≈5.14 km