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.
2\int _{-2}^{2}\int _0^{\sqrt{4-y^2}}\left(4-y\right)dxdy
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random