The value of the circumference of Circle A is four times the value of the area of Circle B. What is the radius of Circle B?
There is also a dot in the center that says 64cm I have no idea how to solve this problem
If 64 cm is the circumference of A then B AREA = 64/4 = 16 cm2
Area = pi * r^2
16 = pi r^2
16 / pi = r^2
r = 2.2568 cm