Answer:
0.40 km
Step-by-step explanation:
2.79-2.39=0.40
400 meters or 0.40 km
All you have to do is subtract the before from the after so 2.79-2.39=0.4
Then you convert the km in meters which is 400 .
1 km is 1000 meters so 0.4 x 1000=400
