Question

the diameter of the wheel ok a car is 77 how many revotins will it make to travel 121 km​

Answer 1

given :-

diameter of the wheel of the car = 77cm

it's circumference = πd

= 22/7 * 77

= 22 * 11

= 242cm = 2.42m

here we have to find the no. of revolutions of the wheel to cover 121km.

so first we needa convert 121km in meters.

121km = 12100m

∴ no. of revolutions it'll make = 12100/242

= 50

hence, the wheel of the car will make 50 revolutions to travel 121km.