Question

The radius of wheel is 20cm.find the number of revolution it will make to travel a distance of 20 km​

Answer 1

Answer:

as radius is given we can find the circumference of the wheel.

Step-by-step explanation:

C = $2\pi r$

C = 2 x 22/7 x 20

C = 44/7 x 20

C = 880/7 cm

let it be in fraction itself.

now 20 km to cm we need to do as units need ot same.

20 km = 20,00,000 cm

Now we need to divide.

2000000/(880/7) = 15909.0909091

Hence it will make 15909.0909091 rotations.

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