Evaluating a line integral with Green's theorem

[geft]

Question: Evaluate using Green's Theorem and sketch R.

The question (excluding the sketch) and the attempted solution are on the attached image. I may have gotten the solution, but the numbers seem funny. Where did I go wrong?

 

[LCKurtz]

I don't see anything humorous in those numbers

Your work is correct.

 

[geft]

Well, it's just that I seldom get something like sinh 1 or cosh 1. Anyway, thanks!