One circle has a circumference half as large as that of a second circle. Which ratio compares the diameter of the first circle to the diameter of the second circle

1 answer

The circumference of a circle is directly proportional to its diameter, so if one circle has a circumference that is half as large as another circle, it must have a diameter that is also half as large. Therefore, the ratio of the diameter of the first circle to the diameter of the second circle is:

1:2 (or 1/2)