Õuna ruumala määramine integraali abil.

A = (0, -3.85)
B = (6.5, -3.85)
C = (0.1, 0.62)
D = (0.34, 1.58)
E = (0.72, 2.12)
F = (1.14, 2.6)
G = (1.7, 2.86)
H = (2.36, 3.22)
I = (3.02, 3.32)
J = (3.54, 3.54)
K = (4.06, 3.48)
L = (4.64, 3.42)
M = (5.1, 3.3)
N = (5.56, 3.04)
O = (6.04, 2.68)
P = (6.3, 2.24)
Q = (6.44, 1.66)
R = (6.44, 0.92)
S: (6.5, 0.32)
f = Fit({C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S}, {1, x^(2), x^(3), x^(4), x^(5), x^(6), x^(7), x^(8), x^(9), x^(10), x^(11), x^(12), x^(13)})
text1: "f\left( x  \right) =  \; " + (LaTeX[f]) + ""
V: (π * Integral[(f(x))^(2), 0, 6.5])
V_{ligikaudne}: round(V)
text2: "V= π \int_{0}^{6.5}{ f\left( x  \right)^2 \; dx }= \; " + (LaTeX[V]) + "≈" + (LaTeX[V_{ligikaudne}]) + " \; cm^3."