L=2πρ

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ΜΗΚΟΣ ΚΥΚΛΟΥ

t = 0 (slider from 0 to 1, step 0.01)
ρ = 2 (slider from 0 to 2.5, step 0.2)
Α = (1.26, 0.02)
Β: Α + (((2 * π) * ρ), 0)
O: Α + (((2 * (π * ρ)) * t), 0)
c = Circle(O, ρ)
Κ: O + (0, (-ρ))
Κ' = Rotate(Κ, (-((2 * π))), O)
Γ: Α + (0, (-ρ))
f = Segment(Γ, Κ)
Κ'_1 = Rotate(Κ, (-(((2 * π) * t))), O)
d = CircleArc(O, Κ, Κ'_1)
Δ: Β + (0, (-ρ))
g = Segment(Κ, Δ)
e = CircleArc(O, Κ'_1, Κ)
L = Segment(Γ, Κ)
k = CircleArc(O, Κ, Κ'_1)
a = true
b = false
ζ: ((2 * π) * ρ)
κείμενο2: "L=2πρ=" + ζ + ""