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(OP)
I want to solve for the diameter (d) of circle for example. A=(π*d^2)/4 for d. I know this is a very simple question, but I can't figure out how to do it symbolically.

Thanks

Ryan Erick Broomé, S.E., P.E.

### RE: Simple MathCAD solving equation

Have you tried the help file? I just tried this with the instructions in the help, it worked well.

### RE: Simple MathCAD solving equation

(OP)
I couldn't find it in the help file. Where did you find it? That would be enough to help me out.

Ryan Erick Broomé, S.E., P.E.

### RE: Simple MathCAD solving equation

type the equation, hit 'ctrl'+'=' for the equal sign, then in the symbolic menu select solve, _ and input the symbolic solve which looks like an arrow. it will look like A = (n*d^2)/4 solve, d ---> answer

### RE: Simple MathCAD solving equation

There are at least 3 ways to get an answer. All require your area equation with <CTRL>+= instead of =

> given [the equation] find(d)<CTRL>+.
where the <CTRL>+. is the symbolic evaluation.

> the symbolic toolbar solve, as described above

> select d so that the editing marks are around the d, select the drop menu Symbolics|Variable|Solve

In all cases the result will be ±2*sqrt(A/pi), but different versions of Mathcad may have differing approaches to having the sqrt(pi) in the denominator.

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### RE: Simple MathCAD solving equation

(OP)
Thanks Gentlemen.

Ryan Erick Broomé, S.E., P.E.

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