# Moderate Time, Speed & Distance Solved QuestionAptitude Discussion

 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

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.

## (8) Comment(s)

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

Romila
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It is given in the question.

Distance given is 1.1 km = 1100 m

Geeth
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how do we get eleven hundred meters

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