Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
int from x=-1 to 1 ((1+sqrt(1-x^2))^2 pi - (1-sqrt(1-x^2))^2 pi) dx
int from x=-1 to 1 ((1+sqrt(1-x^2))^2 pi - (1-sqrt(1-x^2))^2 pi) dx
Natural Language
Math Input
Extended Keyboard
