A = Intersect(xAxis, yAxis)
B = Point(xAxis)
c = Circle(A, B)
C = Point(c)
D = Point(xAxis)
E = (12, 5)
F = (17, 5)
G = Point(xAxis)
poly1, d, e, f, g = Polygon(D, E, F, G)
a: π * 100 / poly1