Your score...

Area from perimeter:

Area from radius:

Perfect Area:


BTW, you a score as close to 100% as possible. The happiness of the cat reflects your score.


Let's draw some circles!

It's really simple. You use your mouse to draw a circle and then you get to find out how accurate you were.

You may wish to press F11 to enter full screen mode


Credit for this page goes to Thomas Denney