Question

An ant completes moving along a circle in time 5 seconds.How much time will it take to travel along the diameter and come back?

I had already asked this question and got the solution but i was unable to view the full answer

Answer 1

Moving along circle means the perimeter of circle.

So 2πr distance in 5 seconds.

Now to go through diameter and come back means 4r distance (diameter is 2r distance)

Above given that,
2πr => 5
2r => 5/π
So to cover 4r distance = (5/π)×2
=10/π seconds.