Two errors:and the radius of the semi circle is 1/2 the height between y = 8 - x^2 and y = x^2
then you will have the intergral from x = -2 to x = 2 because this is where they intersect
For some reason I dont think im accurately doing this
You left out the "thickness" which becomes "dx" in the limit. NEVER write an integral without the "dx"!
Also, it is the entire polynomial that is squared. .
Now, what are the limits of integration?