Jawabanmu

2014-06-10T09:31:36+07:00
Keliling roda = 3,14 x 2 x 25 cm =3,14 x 50 = 157 cm
jarak tempuh = 7,85 km = 785.000
banyak nya putaran = 785.000 : 157 = 5000 putaran
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