Express the speed 54km/h in m/min.
We know that,
1km=1000m1hour=60minutes
So, 54km/h=54×100060=900m/min.
Express the speed 54km/h in cm/s
Write roster form for the given set:
{ m|mis a month of a year and mhas 28days}
Add the following lengths
km m cm
20 600 90
40 750 25
+55 800 19
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