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 \cdot pi \cdot 20^2 + 2 \cdot \pi \cdot 20 \cdot 65 - 2\cdot 14 \cdot 15
2 \cdot pi \cdot 20^2 + 2 \cdot \pi \cdot 20 \cdot 65 - 2\cdot 14 \cdot 15
Natural Language
Math Input
Extended Keyboard
