Question

A circle has a radius of 12 cm.What is the scale factor of the circumference of a circle with a radius of 3 when compared to the original circle? Write your answer as a decimal to the nearest hundredth.

Answer 1

0.25

Explanation:

The solution is in the attached file

Answer 2

The circle with radius 12 has a circumference 4x larger that the circle with radius 3

Explanation:

24pi = 4(6pi)