S_v=12.57

R

h

r_1

h

r_2

R

A = Intersect(d, a, 1)
B = Intersect(d, b, 1)
C = Intersect(c, b, 1)
D = Intersect(c, a, 1)
e = Segment(A, D)
f = Segment(C, B)
E = (5, 0)
F = (3, 2)
h = Segment(E, F)
G = (7, 2)
i = Segment(E, G)
V_1 = (-5, 2)
H = Intersect(k, xAxis, 1)
I = Intersect(k, xAxis, 2)
J = (-5, 0)
p = CircleArc(J, I, H)
K = Point(e)
j: y = y(K)
q: x² / 4 + (y - y(K))² / 0.15 = 1
v: y(K)
L = Intersect(h, j)
M = Intersect(i, j)
S_2: (L + M) / 2
r_s: (x(M) - x(L)) / 2
c_2: (x - x(S_2))² / r_s² + (y - y(S_2))² / (r_s² 0.04) = 1
N = Intersect(p, j, 1)
O = Intersect(p, j, 2)
S_1: (N + O) / 2
r_k: (x(O) - x(N)) / 2
c_1: (x - x(S_1))² / r_k² + (y - y(S_1))² / (r_k² 0.04) = 1
r = 2
S_0: (0, v)
T1: "S_k=" + (π r_k²)
T3: "S_s=" + (π r_s²)
p_k: π r_k²
p_s: π r_s²
p_v: p_k + p_s
T4: "S_k+S_s=" + p_v
l = Segment(J, O)
m = Segment(O, S_1)
n = Segment(S_1, J)
s = Segment(S_2, M)
t = Segment(S_2, E)
a_1 = Segment(S_0, K)
T11: "r_1=\sqrt{R^2-h^2}=" + r_k
T12: "r_2=h=" + r_s