Question

The diameter of the wheel of a car is 77 cm. How many revolution will it take
to travel 121 m ?

Answer 1

Answer:

Let the number of revolutions be x.

x* Circumference of wheel= Area covered

x*2Πr=121 km

x*2*22/7*77/2=12100000cm

x*44*77/14=12100000

x*3388/14=12100000

x*242=12100000

x=50000

Hence, the wheel of the car has to take 50,000 revolutions to cover an area of 121 km.

Answer 2

Answer:

Radius = d/2.

...= 77/2

= 38.5

Answer

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