This finds any kind of root. You enter the kind of root square, cube, fourth etcノ in the first box and the number in the second than hit the button. If the number has a perfect root it is displayed. If it doesn't have a perfect root the program displays a decimal approximation and a reduced version of the root if applicable. In the reduced version the Apple sign stands for the appropriate root. So if you asked it to find the 3rd root of 54 the program would display 3 'apple sign' 2 meaning 3 times the cube root of 2.
This program is based on a similar program I wrote called Square Root Finder which does the same thing for square roots only. If you are only interested in Square Roots I would advise you to find that program as it is easier to use and has more features like negative numbers. Anyway have fun fooling around with this program. It's free and if you have any questions e-mail or mail me.