Question

If the driving wheel of a bicycle marks 560 revolution in travelling 1.1 km , what is it radius ?

Answer 1

Given
Distance =1.1km let change it in meters
=1100m
Revolution =560

In one revolution distance coverd =
$\frac{1100}{560}$
=
$\frac{110}{56} m$
And we know the distance covered in one revolution = Circumference of wheel

Circumference =
$2\pi \: r$
$2\pi \: r = \frac{110}{56}$
$2 \times \frac{22}{7} \times r = \frac{110}{56}$

$r = \frac{110 \times 7}{56 \times 22 \times 2}$

$r = \frac{5}{8 \times 2}$
R=5/16 m

R=5x100/16 =31.25cm


This is ur ans hope it will help you in case of any doubt comment below