y =

V=Π\int_{a}^{b}{x^{2}dy }

f(x) = (0.25 * x^(2)) + 1
c = 4.2 (slider from 1 to 5)
d: f(c)
A: (0, c)
C = (0, 0)
D: (0, f(0))
h = Segment(C, D)
i: y = c
B = Intersect(f, i, 2)
g = Segment(A, B)
e = Circle(A, g, yAxis)