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110 m = 11.000 cm
Jarak sepeda = keliling roda x putaran
11.000 = keliling x 25
keliling = 11.000 / 25
keliling = 440 cm
keliling = 2π r
440 = 2 . 3,14 . r
440 = 6,28 . r
r = 440 / 6,28
r = 70 cm
Jadi, jari-jari roda tersebut adalah 70 cm