Question

How do you find the radius of a circle when given its circumference?

Answer 1

If `C` is a given circumference of a circle and `R` - its radius, then
`R = C/(2pi)`

Explanation:

Circumference of a circle measures as `2piR`, where `R` is its radius and `pi` is a universal constant (`~~3.141592635...`).

Therefore, if circumference `C` is given, from an equation
`C = 2piR`
we can find `R`:
`R = C/(2pi)`