About 150,000 people live in a circular region with a population density of about 1578 people per square mile. Find the iudius of the

Question

About 150,000 people live in a circular region with a population density of about
1578 people per square mile. Find the iudius of the region.

A)11 miles
B)8.2 miles
C)5.5 miles
D) 2.75 miles

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Liliana 2 weeks 2021-09-13T15:18:20+00:00 1 Answer 0

Answers ( )

    0
    2021-09-13T15:20:18+00:00

    Area of a circle = pi x r^2

    Area of circle = 150,000/ 1578 = 95.06 square miles

    95.06 = 3.14 x r ^2

    Divide both sides by 3.14

    R^2 = 30.27

    Find the square root:

    R = sqrt(30.27)

    R = 5.5

    The radius is c) 5.5 miles

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