Jawabanmu

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2014-08-23T14:01:02+07:00
4,2 km = 4200 m
banyak pohon=
4200/50 x 2 = 168pohon
2 3 2
2014-08-23T14:02:31+07:00
4,2km=4200m
4200:50=84 pohon
total = 84x2 = 168 pohon
1 3 1