Question

What is the radius of a circle with an area of 113.04 cubic inches?

Use 3.14 for pi.

Enter your answer in the box.


in.





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

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

Use 3.14 for pi.

Select from the drop-down menu to correctly complete the statement.

There are about people within broadcast distance of the radio station.

Answer 1

Please mark as brain list please please please

Answer 2

Given A radio station broadcasts a signal over an area with a 120-mile diameter. The population density of the area is 100 people per square mile.

So radius = d/2

so r = 120/2 = 60 miles.

Area = π r^2

         = 3.14 x 60 x 60

         = 11,304 sq miles

So for 1 sq mile population density is 100 people

for 11,304 sq miles 11,304 x 100

    = 11,30,400 people

There are about 11,30,400 people.