The radius of a wheel is 0.25 m . Find the number of revolutions it will make to travel a distance of 11 kms

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Solution

Radius $= 0.25 m$
circumference $= 2 π r = 2 \times \frac{22}{7} \times 0.25$
$N o . o f r e v o l u t i o n s = \frac{t o t a l d i s tan c e}{c i r c u m f e r e n c e}$
$= \frac{11000 \times 7}{2 \times 22 \times 0.25} = 7000 r e v o l u t i o n s$

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