Question

Find the radius circumference =62.8mi

Answer 1

10 miles

Explanation:

The circumference of a circle can be found using:

`c=2r\pi`

We know circumference is 62.8, so we can substitute it in

62.8=
`2r\pi`

We want to find r, so we have to isolate it.

Divide both sides by
`2\pi` or 2*3.14 which is 6.28

62.8=
`2r\pi`

62.8=6.28r

62.8/6.28=6.28r/6.28

r=10

So, the radius is 10 miles

Answer 2

r = 10

Explanation:

C = 62.8 = 2π·r

62.8 = 2·3.14·r

r = 62.8/2·3.14

= 31.4/3.14

= 10