Question

Find the circumference of a wheel whose diameter is $126cm$. Find the distance covered by it in taking $50$ rounds in meters.

Answer 1

Given diameter of wheel = 126 cm

radius of wheel $=\frac{126}{2}=63cm$

then circumference of wheel $=2\pi r$

$=63\times 2\times \pi$

circumference $=126\pi cm$

$\therefore$ In one reduction wheel cover $126\pi m$ distance

then

Distance cover is 50 rounds $=50\times 120\pi$

Distance $=7300\pi$

Total Distance covered $=22.922cm$

Total Distance covered by wheel $=229.2m$