1. The problem statement, all variables and given/known data Trying to help a friend with a problem. We are supposed to solve the below using polar coordinates. The actual answer is supposed to be π/16. Solving the integral is not the issue, just converting it. 2. The attempt at a solution What I got sort of worked, but it is only half of the answer given. The actual answer was this, but putting it into the calculator gives a completely different answer from what it's supposed to be. This is how I was reading the situation: The hatch is the area that it seems we need to integrate over, and it also seems as though my answer shouldn't even be close given how it is a rectangular area. Is there something I'm not seeing, or is the provided answer wrong?