# Math Help - Answer Check Please for line integral question(circle)- It just doesnt seem right

1. ## Answer Check Please for line integral question(circle)- It just doesnt seem right

I would appreciate it very much if someone could please check my answer to the below question- I don't fully understand what a line integral is, so an explanation would be helpful also. Thanks!

2. It's easier to solve it if you just use Green's theorem.

Green's theorem - Wikipedia, the free encyclopedia

Your answer is correct by the way.