Solve for r c=2pir

$c = 2 π r$

Step 1

Rewrite the equation as $2 π r = c$ .

$2 π r = c$

Step 2

Divide each term in $2 π r = c$ by $2 π$ and simplify.

Divide each term in $2 π r = c$ by $2 π$ .

$\frac{2 π r}{2 π} = \frac{c}{2 π}$

Simplify the left side.

Cancel the common factor of $2$ .

Cancel the common factor.

$\frac{2 π r}{2 π} = \frac{c}{2 π}$

Rewrite the expression.

$\frac{π r}{π} = \frac{c}{2 π}$

Cancel the common factor of $π$ .

Cancel the common factor.

$\frac{π r}{π} = \frac{c}{2 π}$

Divide $r$ by $1$ .

$r = \frac{c}{2 π}$