Question

One circle has a circumference of 12pie cm. another circle has a circumference of 24pie cm. what is the ratio of the radius of the smaller circle to the radius of the larger circle?

Answer 1

The radius of the small circle is: r= 12pie/2 = 6pie
The radius of the big circle is: R = 24pie/2 = 12pie
The ratio of the radius is: 6pie/12pie = 1/2