Time, Speed & Distance
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Q.

If the wheel of a bicycle makes 560 revolutions in travelling 1.1 km, what is its radius?

 A.

31.25 cm

 B.

37.75 cm

 C.

35.15 cm

 D.

11.25 cm

 Hide Ans

Solution:
Option(A) is correct

The distance covered by the wheel in 560 revolutions = 1100 m. 

Hence, the distance covered per revolution = \(\dfrac{1100}{560}=\dfrac{55}{28}\) metres

The distance covered in one revolution = circumference of the wheel. 

Circumference \(=2\pi r=2\times \dfrac{22}{7}\times r\)

$⇒ r$ = 31.25 cm.


(5) Comment(s)


Dewaynedam
 ()

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Geeth
 ()

how do we get 1100m. can yiu explain about it..


Romila
 ()

It is given in the question.

Distance given is 1.1 km = 1100 m


Geeth
 ()

how do we get eleven hundred meters



Geeth
 ()

how do we get 1100m.can u explain about it