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1 answer:
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Step-by-step explanation:
The sum of the interior angles of a triangle is equal to 180°. So from the figure, we can see that
Collecting all similar terms, we get
or
So the angle measures are now as follows:
1 km = 1000 m
400 km = 400·1000 m = 400000 m
and
1 h = 3600 s
4 h = 4·3600 s = 14400 s
so the average speed:
400 km = 400·1000 m = 400000 m
and
1 h = 3600 s
4 h = 4·3600 s = 14400 s
so the average speed: