Question

Two circles have a scale factor of 3:2. What is the ratio of the circumferences of these circles?

A. 12:26
B. 13:12
C. 9:4
D. 3:2

Answer 1

3:2

Explanation:

The circumference is a distance. The ratio of the distance is the same as the scale factor. The ratio of the areas is the ratio of the scale factor squared and the volume is the scale factor cubed.