Question 914035
Pi is just pi surrounded by the triple braces rendering tags.
Three of these, {
pi
Three of these, }
-
That will look like, {{{pi}}}.


Guessing that you have a formula (1/2)pi*F[c]C=R shown in pure text for the algebra dot com system, rendered as {{{(1/2)pi*F[c]C=R}}}.  Notice very carefully, the asterisk, * is necessary between pi and the F in order for the pi to be rendered as the correct symbol.


You have part of the idea, to do the same thing to both sides of the equation to find {{{F[c]}}}.  You see F sub c multiplied by some factors.  You want the MULTIPLICATIVE INVERSE of those factors.


Multiply the left and right sides of the equation by {{{(2/1)(1/pi)(1/C)}}} and then simplify.  Do the steps on paper!


Your finished result may be as {{{highlight(F[c]=2R/(pi*C))}}}.


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This formula was really meant:  1/(2*pi*F[c]C)=R as shown in pure text.
Rendering tags make it  {{{1/(2*pi*F[c]C)=R}}}, and now you know what to do to solve for {{{F[c]}}}.

Multiply left and right members by {{{F[c](1/R)}}} and simplify.