Teht. 235

A = (2, 2)
B = (-2, -2)
C = (-2, 2)
D = (2, -2)
m1, a, c, b, d = Polygon(A, C, B, D)
O: (0, 0)
e = Circle(O, 2)
f = Circle(O, sqrt(5))
E = Intersect(f, a, 2)
F = Point(f)
G = Intersect(f, b, 2)
H = Point(f)
m2, e_1, f_1, g, h = Polygon(E, F, G, H)
i = Integral(sqrt(5 - x^(2)), -2, -1)
j = Integral((-sqrt(5 - x^(2))), -2, -1)