Triangles in circles.

Imagine a circle of radius $6cm$ . Now, pick any 3 points on the circumference of the circle and connect them to form a triangle. What is the probability that the area of the triangle you have formed is $\geq 47cm^{2}$ ?

Assumptions: Your answer should be $\leq 1$ and should be in decimal form.

If you arrive at a decimal with more than 3 decimal places, round it off the 3 decimal places and enter that as your answer, else just enter your answer as it is.