The radius of a cycle wheel is 35 cm. How many revolutions, will it make to cover a distance of 1.1 km?

$\left(\right.$ Take $\left.\pi=\frac{22}{7}\right)$

Distance covered by wheel in 1 revolution = Circumference of wheel

$=2 \pi r=2 \times \frac{22}{7} \times 35=220 \mathrm{~cm}$

Distance = 1.1 km

= 1100 metre = 110000 cm.

∴ Number of revolutions

$\frac{\text { Distance }}{\text { Circumference }}=\frac{110000}{220}=500$