Question

the radius of the wheel of a bus is 25 cm .how many rotation will a wheel complete while travelling a distance of 12 km.

Answer 1

radius of wheel =25cm
circumference=2×22/7××radius
                      =44/7×25
                     =157.14cm
rotation it will a wheel complete while travelling a distance of 12 km.
rotation=distance/circumference
               =157.14/12
                   =13.095
=14 rotations(round of 13.095)
the answer is 14 rotations