Question

The circumference of a circular track is 400. Find its radius​

Answer 1

The radius is 63.69.

Explanation:

Given:

The circumference of a circular track is 400.

Now, to find the radius:

So, to get the radius(r) we put the formula of circumference:

`Circumference=2\pi r`

⇒
`400=2* 3.14* r`

⇒
`400=6.28* r`

Dividing both sides by 6.28 we get:

⇒
`63.69=r`

⇒
`r=63.69`

Therefore, the radius is 63.69.