Tough in a basic text software such as Notepad. In Microsoft Word 2007, you can use Insert > Equation or Insert > symbol. Otherwise, it is acceptable to use the function sqrt(), as in sqrt(4) = +/- 2. Sqrt() is a legal function in most software and programming languages. It is easily understood in a mathematical expression.
============================ In Windows, go to Start->all programs -> accessories -> system tools and click on Character Map. Select the font "symbol" and then click on the square root symbol. Then click on select and copy. The symbol will now be copied to your clipboard and you can paste it like this: √
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plug it into a calculator - (square root symbol, insert value of volume, end parenthesis)/(height value, pi symbol)
The answer can be found at http://office.microsoft.com/en-us/powerpoint/HA011327531033.aspx
go to system tools and click on Character Map. Select the font "symbol" and then click on the square root
The symbol for a a square root sign is: √
The only thing that a square root symbol does is that it symbolises an operation (taking the square root) of whatever is under the sign.