Question

The diameter of a wheel is $1.26m.$ How far will it travel in $500$ revolutions$?$

Answer 1

It is given that diameter of a circular wheel $=1.26m$

radius$=\frac{1.26}{2}$

radius $=0.63m$

Distance travel by a wheel in one revolution $=2\mathrm{\pi r}$

Distance travel by a wheel in $500$ revolution $=500\times 2\mathrm{\pi r}$

$=1000\mathrm{\pi r}$

$=1000\times \frac{22}{7}\times 0.63$

$=1000\times 22\times 0.09$

$=10\times 22\times 9$

$=1980m$

Hence$,$ the distance travel in $500$ revolution is $1980m$