def circumcircle_of_a_triangle(a, b, c):
    """
    Calculates the radius and area of the circumcircle of a triangle given the three sides.

    s = (a + b + c) / 2
    _circumcirle_radius = r = (a * b * c) / (s * (s - a) * (s - b) * (s - c))**(1/4)
    _circumcirle_area = Sc = pi * (r ** 2)
    _triangle_area = St = (s * (s - a) * (s - b) * (s - c))**0.5
    return r,Sc,St
    """
    pass
