# The diameter of circle A is 3 times the diameter of circle B. What is the ratio of the radius of circle A to the radius of circle B?

##### 1 Answer

Apr 27, 2018

3:1

#### Explanation:

The relation between the radius and the the diameter of a circle is linear ( diameter= 2 *radius).

Therefore, if the diameter of one circle is 3 times the other, the ratio of their radii is also the same i.e. 3:1.