How do i solve for the area of a circle? Example: symbol r("r"); ex e = pow(r,2) * Pi == 30; ex solve = lsolve(e,r); //This example does not work. An error message indicating that this is not a linear equation is returned. How do I solve for "r" in this case. //Could you also show an example of how to solve for a simple polynomial, such as: ex = pow(a,2) + a = 3 How do i solve for "a". regards, Tom Brikman __________________________________ Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time. http://taxes.yahoo.com/filing.html