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keliling = 235500 ÷ 75
kel = 3140 cm
kel O = 2 x 3,14 x r
r = 3140 ÷ (2 x 3,14)
r = 3140 ÷ 6,28
r = 500 cm
Berarti dalam satu putaran, roda tersebut menempuh 3,14 meter.
Ingat!
Jadi, jari-jari roda tersebut adalah 50 cm.