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Eddi Din [679]
3 years ago
5

Circletown’s limits form a perfectly circular shape, it has a population of 20,000 and a population density of 480 people per sq

uare kilometer. What is circle towns radius?
Mathematics
2 answers:
dimaraw [331]3 years ago
3 0

Answer:

The radius of the town is 3.641 km.

Step-by-step explanation:

The density of people in the city is given by the formula:

density  = number of people / area of the city

Since the city is a perfect circle, it's area is given by:

area of the city = pi*r²

We have:

480 = 20000/pi*r²

480*pi*r² = 20000

r² = 20000/480*pi

r = sqrt(20000/480*pi) = 3.641

The radius of the town is 3.641 km.

Alik [6]3 years ago
3 0

Answer:

3.64

Step-by-step explanation:

Round it to this if you are on khan academy

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