babygirlali babygirlali

16-08-2018
Mathematics

contestada

about 70,000 people live in a circular region with a 30-mile radius. find the population density in people per square mile.

Respuesta :

zandriasalmon zandriasalmon

16-08-2018

Solve for the area of the circular region first:

A = pi*r^2

A = pi*(30 mi)^2

A = 2827.43 mi^2

Density = 70000 people/2827.43 mi^2

Density = 24.76 = 25 people/mi^2 <--ANSWER Plz vote brainnliest

Answer Link

Otras preguntas

Work algebraically and you must show equation used and the work used to get your answers.A wooden access ramp is being built to reach a platform that sits 30 in

who said "The advance of the frontier has meant... a steady growth of independence on American lives"?

What is three tenths plus three fifths

who said "The advance of the frontier has meant... a steady growth of independence on American lives"?

You want to describe the harmonic motion of a swing. You find out that it take 2 seconds for the swing to complete one cycle. What is the swing’s period and fre

Write an algebraic expression for the difference of 10 and u

Write an algebraic expression for the difference of 10 and u

If four fifth of the 30 students in the class were present, how many students were absent?

How do I find the formula for the sequence: 3, 6, 18, 72, 360, ...

how might a suit of armor be a good analogy for function of the skeletal system