Am I stupid? (What is the circumference?)
Please, tag anwsers as spoilers before posting, I still didn't crack it.
Spoiler
@Inginsub
Fuck me, I didn't see it without a paper.
And I had to use an actual equasion. Mark one side (and middle) as 9+x and the second as 9-x
So... 30
Spoiler
@LukeAlmighty @Inginsub no I did the math off, it's 30
Spoiler
@Inginsub @LukeAlmighty I don't know why in my mind I did a 5+4=10
Spoiler