Jawabanmu

2014-08-10T22:00:04+07:00
1. 1 : 25.000
2. 0,7
3. 80 km 
4. 1 : 8.000
2014-08-10T22:00:04+07:00
1. s =jp/js
s =12cm/3km
s = 12 / 300000 cm
s = 1/400000
2. jp=js x s
jp=3.5 km x 1/500000
jp=350000/500000
jp=0.7