Question

If the ratio of the circumference of two
circles is 2:3, what is the ratio of their
radii?​

Answer 1

Answer is 4:9

look at the pic

there is the answer of your question

hope it's correct and helps to you..

Answer 2

Let the radius of two circle be 2x and 3x respectively. Ratio of Circumference of two circles ; Hence, ratio of their Circumferences is 2 : 3. Thanks for the question !