Odpowiedzi

2009-11-20T19:47:24+01:00
108 x 100000cm=108000cm
108km=108000cm

108000cm/60=1800-l. obrotow na 1 h
1800/3600=0,5
2009-11-20T19:56:38+01:00
D = 60 cm
v = 108 km/h = 3000 cm/s
t = 1 s

o=2 pi r
o = 2 * 3,14 * 60 cm= 376,8 cm

3000 cm / 376,8 cm = 7,96
odp. 7.96