An express train is running between two station with a uniform speed. if the diameter of each wheel of the train is 42 cm and each wheel make s 1200 revolution per minute. find the speed of the train.
Answers
Answered by
2
Step-by-step explanation:
Diameter of the wheel =42cm=42cm
Therefore,
Radius r=21cmr=21cm
It makes 12001200 revolution per minutes.
Distance travelled in 11 revolution =2\pi r=2πr
=\pi d=πd
=\dfrac{22\times 42}{7}=
7
22×42
=132cm=132cm
Distance travelled in 12001200 revolution =132\times 1200cm=132×1200cm
Therefore,
Speed =\dfrac{132\times1200}{1}=
1
132×1200
=\dfrac{132\times1200\times 60km}{1\times 100\times 1000 hour}=
1×100×1000hour
132×1200×60km
=95.04km/h=95.04km/h
Answered by
4
Answer:
95.05km/hr Will be the correct answer
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