## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$d=\dfrac{C}{\pi}$
Using the properties of equality, in terms of $d$, the given equation, $C=\pi d$, is equivalent to \begin{array}{l}\require{cancel} \dfrac{C}{\pi}= d \\\\ d=\dfrac{C}{\pi} .\end{array}