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.
pi*(integral from y=-2 to y=2 of (5-y^2)^2-1^2 dy)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random