The wheel of an engine is 25 decimetres in circumference. It makes 16 revolutions in 4 seconds. The speed of the wheel (in km/hr) is
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circumference=25dm=250m
=250/1000km
distance covered=16×250/1000=40 km
speed = dis/time
=40/(4/3600)
=40×3600/4=36000 km/hr
ashabalam:
Galat h answer 36 hai
sorry
I think the answer given in book is wrong
thank u
sorry
I don't have time now I need to go.
I think I have done some mistake
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