Given diameter of front, d1=80 cm
And diameter of rear wheels, d2=2m=200 cm
∴ Radius of front wheel (r1)=802=40cm
And radius of rear wheel (r2)=2002=100cm
∴ Circumference of the front wheel
=2πr1=2×227×40=17607
∴ Total distance covered by front wheel
=1400×17607=200×1760
=352000 cm
Number of revolutions by rear wheel =Distance coveredCircumference
=3520002×227×100=7×35202×22=2464044=560