The formula for the area of a circle is A pr 2. Solving Formulas for Different Variables 1 Solve IPrt for P. In other words they are costs that vary depending on the volume of activity.
Now that the variable we are looking for is on one side of the equation we generally need to factor out the variable we are solving for.
This algebra video tutorial explains how to solve a formula for a variable. The formula for the area of a circle is A pr 2. In other words they are costs that vary depending on the volume of activity. Solving Formulas for Different Variables 1 Solve IPrt for P.