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r = 53 cm
jarak = 192 m = 19.200 cm
maka :
K = 2 x 3,14 x r
= 2 x 3,14 x 53
= 332,84
Jadi Banyak putaran roda = 19.200/332,84 = 57,68 = 58 kali
192m = 19200cm
19200 : 332.84 = 57.6