Jawabanmu

2014-09-10T20:24:36+07:00
Jarak=kecepatan x waktu
=70km/jam x 210 menit
=(70:60) x 210
=1,2 x 210
=252km
2014-09-10T20:48:34+07:00
210 menit = 3,5 jam
S= V x T = 70 x 3,5 = 245 km

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