Abwickeln

Abgewickelter Umfang

Abgewickelter Umfang

Gesamter Umfang

r = 2 (slider from 1 to 5, step 0.1)
M_2: (0.0, r)
c = Circle(M_2, r)
α = 2.0073031727186783 rad (slider from 1.7453292519943296E-4 to 6.283185307179586, step 0.017453292519943295)
a: α / 180.0 / °
b: a * 3.141592653589793 * r
Text2: "b = " + b + ""
M: (b, r)
d_1 = Circle(M, r)
A, B = Intersect(c, xAxis)
e = Circle(B, b)
C, D = Intersect(e, xAxis)
f = Segment(B, D)
D' = Rotate(D, -1.0 * α, M)
β = Angle(D', M, D)
g = CircleArc(M, D, D')
D_2: (0.0, 2.0 * r)
d = Segment(D_2, A)
Text3: "d  =  2r  =   " + (2.0 * r) + " cm"
Text4: f + " cm"
Text7: 2.0 * 3.141592653589793 * r + " cm"
Text1: "a= " + a + ""