Jawabanmu

Jawaban paling cerdas!
2014-08-26T19:37:40+07:00
1,8 km -> 1800 m
1800 m : 3 m/s =600 s
600 s : 60 = 10 mnt
07.00 - 00.10 = 06.50
jadi D 06.50 :)
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