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Elena-2011 [213]
3 years ago
8

A train 100 m long crosses a pole in 5 seconds.Find the speed of the train in kilometre per hour.​

Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0

Answer:

\sf72  km/h

Step-by-step explanation:

Distance covered by the train in crossing the pole = 100 m.

\sf Time \:  taken=5 \:  seconds

\sf \: Speed  \: of \: the \: train =  \frac{Distance }{Time}

\sf =  \frac{100}{5} \:  m/s

\sf \:  = 20 \: m/s

\sf \: =  20 \times \frac{18}{5}  \: km/h

\sf = 72 \: km/h

  • Hence, the speed of the train is 72 km/h
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Answer:

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In the 30°-60°-90° triangle, there is a ratio between its sides

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