Question

A wheel has diameter 84cm.The number of complete revolution it will take to cover 792m

Answer 1

diameter=84 cm
for 1 revolution distance covered =2πr=πd=84π
distance to be covered=792m
total revolutions to cover 792m=792/84π
=792*7/(84*22)= 3revolutions.
(take value of pi as 22/7)