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d = 84
keliling = x d
= x 84
= 264 cm
roda berputar = 660.000 : 264
= 2500 kali
d = 84cm ; r = 42 cm
kll = πd
kll = 22/7 . 84
kll = 22 . 12
kll = 264 cm
jarak = banyak putaran . keliling
660 000 = banyak putaran . 264
660 000 / 264 = banyak putaran
2500 = banyak putaran
S = 6600 meter
kll = 2,64 meter
jarak = banyak putaran . keliling
6600 = banyak putaran . 2,64
6600 / 2,64 = banyak putaran
2500 = banyak putaran
jadi, dalam cm ataupun m nilainya sama saja