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= 1,5 cm ÷ 90 km
= 1,5 cm ÷ 9.000.000 cm
= 1 : 6.000.000 cm / 1 cm = 60 kn
5. saya tidak tahu ( maaf ya.. )
2,diketahui: s:1:60.000
jp: 50 cm
ditanya....?
jawab:50:1/60.000
50×60.000/1
3.000.000 cm
30 km