C'mon! Archery is Irrelevant here!

Geometry Level 3

There are 3 concentric circles with center \(O\) and radii \(3,5,7\) units.

Points \(A,B,C\) are on these circles, one on each circle.

Find the minimum value of \(AB+BC+CA\)

Also see

Remember the Aim in Archery?

There's no Archery without Aim!

Only looks like Archery Aim!