The radius of the wheel of a vehicle is 70, c | vedclass

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(B) The circumference of the wheel is given by $C = 2 \pi r = 2 	imes \frac{22}{7} 	imes 70\, cm = 440\, cm$.The distance traveled in $10$ revolutio

Vedclass · Accepted Answer

$31.68$

Vedclass · Answer

(B) The circumference of the wheel is given by $C = 2 \pi r = 2 	imes \frac{22}{7} 	imes 70\, cm = 440\, cm$.The distance traveled in $10$ revolutions is $10 	imes 440\, cm = 4400\, cm = 44\, m$.The time taken is $5\, seconds$.The speed in $m/s$ is $	ext{Speed} = \frac{	ext{Distance}}{	ext{Time}} = \frac{44}{5}\, m/s = 8.8\, m/s$.To convert the speed from $m/s$ to $km/h$,we multiply by $\frac{18}{5}$:$	ext{Speed} = 8.8 	imes \frac{18}{5}\, km/h = 31.68\, km/h$.

The radius of the wheel of a vehicle is $70\, cm$. The wheel makes $10$ revolutions in $5\, seconds$. The speed of the vehicle is......$km/h$.

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