Question

Radius o circular wheel is 7/4 how many revolution it has to make in travellling 11 km

Answer 1

$2\pi \: r \: \\ 2 \times \frac{22}{7} \times \frac{7}{4} \\ \frac{11}{7 } \times \frac{7}{4} \\ \\ \frac{11}{4}$