450km is about 280 miles.
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There are 1000 metres in one metre. Therefore, 450 metres is equal to 450/1000 = 0.45 kilometres.
it is 724.05km/h
Oh, dude, you're really making me do math? Alright, so 3 kilometers is like 3000 meters, and then you add the 450 meters, so that's 3450 meters in total. In kilometers, that would be 3.45 kilometers. Math is fun, right?
6.3 kilometers=6,300 meters