TL;DR

You have a 4 sided polygon inscribed in a circle. Chord lengths are 2,3,4,5 in any order. Find the radius of the circle. It is also of interest to work the same thing for chords of length 2,7, 11, and 14.

Edit: I'm going to add to this, that if some people are stuck on it, that I didn't solve it instantaneously either. I was able to solve it though.

EDIT: and now I’m not even sure if that makes any sense at all….