Question

Can someone please help me on this?

Answer 1

L = 7.07 in

Explanation:

L = arc lenght

`L=(\pi (45)(9))/(180) =2.25\pi =7.07in.`

Hope this helps

Answer 2

`(9\pi )/(4)` inches

Explanation:

I suppose they are asking you for the length of the red part.

18
`\pi \\` *
`(45)/(360)` =
`(9\pi )/(4)` inches