Aradio station broadcasts a signal over an area with a 120-mile diameter. the population density of the area is 100 people per square mile. l

how many people are within receiving distance of the broadcast signal?

use 3.14 for pi.

a. 1200
b. 18,840
c. 1,130,400
d. 4,521,600

Determine the area of the circular region that can be reached by the radio station signal using the equation.
                               A = πD²/4
A is area and D is diameter. Using 3.14 as pi value. 
                             A = (3.14)(120 mi)² / 4 
                             A = 11304 mi²
Knowing that in each of the squared miles, 100 people live.
  total population receiving the signal = 11304 mi² x (100 people / 1 mi²)
                                    = 1,130,400
Thus, the answer is letter C. 
 

What mathematical statement is missing ? ? the answer is b