A kilometre is a unit of distance. A minute is a unit of time. The two units are therefore incompatible.
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45 km = 28 miles so 45 km per hour = 28 miles per hour.
1000 km is equal to 621.38818 miles
1.2 km is equal to 1,200 meters.
45 km
Answer: 3.5 km = 2.17479 mi.