f(x) = 16.0
A = Intersect(xAxis, yAxis)
a = 12 (slider from 0 to 30, step 0.1)
B: (a, 0.0)
b: x = a
c = Circle(A, 30.0)
d = Circle(B, 40.0)
C, E = Intersect(c, b)
D, F = Intersect(d, e)
g = Segment(A, C)
h = Segment(B, D)
afstandAC = Distance(A, C)
i = Distance(g, h)