I am about to do some calculations involving Pi. These would be easy to do in a spreadsheet, but I need the result to use Pi as a symbol - not as an approximated value.
A B C 1 =5 =Pi =A1*B1 2 =2 =3.2 =A2+B2*C1*Pi
A B C 1 5 Pi 5*Pi 2 2 3.2 2+16*Pi^2
Does such a spreadsheet exist? I have the feeling that there will be so few tools that I cannot really be picky about the OS or price. If there are many of such tools, I would prefer GNU/Linux and free software.