Question

The radius of a wheel of a bus is 0.70m.How many revolutions will it make in covering 22 km.

Answer 1

QUESTION ----- The radius of a wheel of a bus is 0.70m.How many revolutions will it make in covering 22 km.


ANSWER
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Radius = 0.70 m

In one revolution, the wheel will roll once around its circumference, so one revolution equates to a distance of :

Circumference = 2 π r

Distance/Circumference = 2 π r

Distance = 2 × 22/7 × 0.7

Distance = 44/7 × 0.7

Distance = 44/10 m

Distance = 4.4 m

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THEREFORE,
22 km = 22000 m

No. of Revolutions made =
=>Total Distance / Distance covered in 1 revolution

No. of revolutions = 22000 / 4.4

No. of revolutions = 5000

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ANSWER =
No. of revolutions = 5000
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HOPE IT HELPS :):):):):):)

Answer 2

circumference of wheel= 2πr
                                     = (2 x 0.7)π
                                     = 4.4m

no.of revolutions = distance travelled / circumference of wheel
                           = 22000/4.4
                           = 5000 revolutions