Jawapan

2014-08-18T21:37:30+08:00
8460m ÷ 1000 = 8.46km
52km - 8.46km = 43.54km

2014-08-19T04:48:39+08:00
Answer is 43.54km
8460 change to km.Then,minus with 52km.
THAT'S SOLVE