2 r = 3 mm
Obwód
L = 2 pi*r = 2 r *pi = 3 mm* pi = 3 pi mm = około 9,42 mm
==============================================================
r-promień=½ * 3mm=1,5mm
π=3,14
L-obwód
L=2πr
L=2*3,14*1,5mm
L=9,42mm-obwód piłki
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2 r = 3 mm
Obwód
L = 2 pi*r = 2 r *pi = 3 mm* pi = 3 pi mm = około 9,42 mm
==============================================================
r-promień=½ * 3mm=1,5mm
π=3,14
L-obwód
L=2πr
L=2*3,14*1,5mm
L=9,42mm-obwód piłki