Question

An automobile wheel has a diameter of $35cm$. How many revolutions will it make to cover a distance of $11$ kilometers?

Answer 1

R.E.F image

distance covered by wheel in 1

Revolution is $2\pi r$

for 'n' revolution

$\cap \left(2\pi r\right)=11\times {10}^{3}m$

$\cap =\frac{11\times {10}^3}{2\times \pi \times 35\times {10}^{-2}}$

$\Rightarrow \cap =5000$