Question

Find the distance travelled, if the circumference of the wheel is 2.1m, when it completes 200 revolutions.

Answer 1

We have to find the distance travelled, if the circumference of the wheel is 2.1 m when it completes 200 revolutions.

solution : each revolution, distance covered by wheel = circumference of wheel = 2.1 m

So distance travelled by the wheel = circumference of wheel × number of revolutions

= 2.1 m × 200 revolutions

= 420 m

therefore total distance covered by the wheel is 420 m.

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Answer 2

Given : Find the distance travelled, if the circumference of the wheel is 2.1 m.

　

To find : What eill. be the distance covered when it completes 200 revolutions.

　

Concept :

1. We know that "Revolution" means one full round.
2. As per this question, for each revolution the wheel covers 2.1 meters.

　

Formula :

★ Distance covered = Distance covered in one revolution × Total number of revolution.

　

Calculations :

→ Distance covered = 2.1 (200)

→ Distance covered = 2.1 × 200

→ Distance covered = 420 m

　

Therefore, 420 m is the distance covered by the wheel in 200 revolutions.