Jawabanmu

2014-03-02T13:45:20+07:00
150.000 x 15 = 2.250.000 cm
2.250.000 : 100.000 = 22,5 km jarak sebenarnya
2014-03-02T13:45:29+07:00
150000.15=2250000 cm.
               =22.5 km