Vorlage Geo
page1
Kreis
A
Fläche
d, D
r, R
u
Durchmesser
Radius
Umfang
A =
12,56 cm2 =
D = d
R = r
12,56 cm2 ≈ 0,785 • 16 cm2
d = 4 cm
r = 2 cm
π • d2
4
3,14 • 16 cm2
4
A = π • r2
A ≈ 0,785 • d2
12,56 cm2 = 3,14 • 4 cm2
u = π • d
U = π • 2 • r
12,56 cm = 3,14 • 4 cm
12,56 cm = 3,14 • 2 • 2 cm