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Ob= 3,14*6cm=18.84
L=2πr=6πcm
Przekątna:
a=6 cm
d=a√2 = 6√2 [cm]
Promień:
r=0,5d
r=0,5*6√2 = 3√2 [cm]
Długość okręgu:
l=2πr
l = 2π * 3√2 = 6√2π [cm]