So just like the other answer said, to look for the squares area you'll need to multiply 8.5 times 8.5 to get 72.25. Theeen, take that radius that they give you and plug it into your formula for area of a circle; pi•r^2.
That gives you 113.09.
Subtract both of those numbers to get 40.84!
Ooo i hope that's right.
Hope this helps : D
