# System of Circle-O-Triangle!

**Geometry**Level 5

First one has center at \(A \left(\dfrac{\sqrt{3}}{2},\ 0 \right)\) and has radius \(1\).

Second one has center at \(B \left(\dfrac{20-3\sqrt{3}}{2},\ 1 \right)\) and has radius \(3\).

Third one has center at \(C \left(5,\ 5\sqrt{3}-\dfrac{3}{2} \right)\) and has radius \(2\).

Find the perimeter of the triangle with maximum area, having one vertex on the circumference of each of the circles. Enter the answer to 3 decimal places.