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jarak (s) = 6,6 Km = 6,6 x 100.000cm
s = 660.000cm
D = 84 cm
Dit: banyak putaran (n)...?
cari keliling roda dulu
K = π D
K = 22/7 84
K = 1848/7
K = 264
,
n = s/K
n = 660.000/264
n = 2500
jadi bnyk putaran roda = 2500 kali