Question

The diameter of a wheel is $1.26cm$. What is the distance covered in $500$ revolution.

Answer 1

Step 1. Diameter of the wheel $=1.26cm$

therefore, radius $\left(r\right)=\frac{1.26}{2}=0.63cm$

Step 2. Find the distance

total distance covered by wheel in $500$ revolutions.$=$circumference of wheel $x500$

$=2\mathrm{\pi r}\mathrm{x}500$ [Since, circumference of wheel$=$circumference of circle$=2\mathrm{\pi r}$]

$$\begin{gathered} =2x\frac{22}{7}x0.63\mathrm{x}500 \\ =3.96x500 \\ =1980cm \end{gathered}$$

Hence, the distance covered by wheel in $500$ revolutions is $1980cm$.