Question

the radius of the wheel of a vehicle is 42 cm how many Revolution will it complete in a 19.8 kilometre long journey​

Answer 1

radius=42cm

circumference=2. pi.r

=2×3.14×42cm (1)

distance=19.8km = 198×10^4 cm (2)

no. of revolutions = (2)/(1)

=7500

Click to let