Question

The diameter of the wheel of a car is 70cm. How many revolutions will it make to travel 99km

Answer 1

Answer:

Step-by-step explanation:

C = πd

   = 22/7 × 70 = 220 cm

1 km = 1000 m  & 1 m = 100 cm

∴ 99 km = 9900000 cm

No. of Revolutions = Distance ÷ circumference

                               = 9900000 ÷ 220 = 45000