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r=0,25m
l=2*22/7*25/100
l=11/7
1000m/ 11/7m =x
x=7000/11m
x=636,(36)
Pozdrawiam! :)
obwód koła = πd = 50π cm = 50 razy 22/7 = 1100/7 cm
1 km = 1000 m = 100000 cm
100000 podzielić przez 1100/7 = 100000 razy 7/1100 = 700000/1100 = 636,6 obrotu