Question

The diameter of each wheel of a vehical is 42 cm . Each wheel makes 20 revolutions in 12 seconds . Find the speed of tha vehical in meter per minute

Answer 1

Step-by-step explanation:

47.52

Given,

r=21cm

So, distance covered in one rotation is 2πr

= 2*3.14*21

= 131.88cm

Rpm =600

So

Distance covered in a minute

= 600*131.88

= 791.28m/min

Convert this to kmph

=(791.28/1000)/(1/60)

=47.5 kmph

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