Answer:
![r_Y=(3)/(\pi)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/lyzmw4rrhrkaf9lm15xqgvcf6f3qcp6wjv.png)
Explanation:
Circumference has the formula:
C = 2πr,
Where
C is the circumference
and
r is the radius
Given Circle Y has Circumference of 6, we can find the radius:
C = 2πr
6 = 2πr
r = 6/2π
r = 3/π
So, the radius (r_y) of Circle Y is 3/π, the first choice is right.