The circumference of circle B is 48. The circumference of circle A is 12. How many times greater is the area of circle B to the area of circle A

Circumference = 2 (pi) (radius)

Circle 1: 48=2 (pi) (radius)

24/pi = radius

Circle 2: 12 = 2 (pi) (radius)

6/pi = radius

Area = (pi) (radius) ^2

Circle 1: A = (pi) (24/pi) ^2

= 576 / pi

Circle 2: A = (pi) (12/pi) ^2

= 144 / pi

576/144 = 4 times greater