We consider the region between two curves and .
First, we find the intersection points. Since two curves can be written as and , plugging the first one into the second one, we get
Therefore, the intersection points are
and
.
On the other hand, according to the question, the curve lies on the right side of , so that when .
To summarize, the area between the two curves has to be an integral of the form
The last equality follows from the fact that is even. Therefore, the answer is .
Answer: .