Help me out lads, I'm a dumbass. I was as drunk as my maths teacher when I was in school. I'm in a field in the north of Scotland staking up trees. Long story short, I need to position 3 stakes in an equilateral triangle around each tree. The triangle needs to fit into a circle with 50cm radius around each tree. How long are the sides of my triangle?

Plz halp, anons. It's snowing and windy, and I'm nearly crying.