The circumference of the wheel is 2*pi*14 = 28pi cm, which is the distance moved in one revolution. Therefore it will take 890/(28pi) revolutions to move a distance of 8.9m (=890cm).
The circumference of the wheel is 2*pi*14 = 28pi cm, which is the distance moved in one revolution. Therefore it will take 890/(28pi) revolutions to move a distance of 8.9m (=890cm).