Answers

2016-04-15T00:35:12+05:30
1 km=1000x4=4000 m
half km is 1000/2 that is 500 m
So we will add both 4000 & 500
4000+500=4500 m 
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2016-04-15T15:03:19+05:30
There are 4500 metres in 4 and a half kilometres.
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