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d = 0,6 m
keliling = π x d
keliling = 3,14 x 0,6
= 1,884 meter
garansi = 7000 km = 7.000.000 meter
jumlah putaran = 7.000.000 / 1,884 = 37.154.989,4 putaran
No 19.
diketahui diameter = 12.800 + 2000 + 2000 km = 16.800 km
keliling = π x d
keliling = 3,14 x 16.800
= 52.800 km
70.000 km = 70.000.000 m
banyak putaran = 70.000.000 m / 1,884 m = 37.154.989,38 putaran
19. panjang lintasan = (12.800 + 2.000 + 2.000) x 22/7
= 16.800 x 22/7
= 52.800 km