Here's a hint:

You can find the interior angle by using the following formula:

180(n-2)/n.

Can you figure it out from there?

Oof I was just going to change it to AC equals 4 sqrt2 and BM equals 2 sqrt 5, then I saw your hint.

I want to know like where the point o is...

From there, Maybe I could work it out?

Split it.

So just go like:

\(x^2-20-1=20\)

Solve that AND

\(-x^2+20+1=-20\)

I think.

Can somebody verify me?

WHoops!

Thank you!!!!!!!

Wait: Don't I need to calculate the circle:

so that would be

2pir

12pi+72pi

84pi?

Wooot!

Thx!

So I am right~

Thank you!

2* pi *6^2

2*pi*36

72pi

Am I right?

yay so I get this: