Solve c=pidquadf

$$c = \pi d \quad f$$

Solve for d

$$\left\{\begin{matrix}d=\frac{c}{\pi f}\text{, }&f\neq 0\\d\in \mathrm{R}\text{, }&c=0\text{ and }f=0\end{matrix}\right.$$

Steps for Solving Linear Equation

Swap sides so that all variable terms are on the left hand side.

$$\pi df=c$$

The equation is in standard form.

$$\pi fd=c$$

Divide both sides by \pi f.

$$\frac{\pi fd}{\pi f}=\frac{c}{\pi f}$$

Dividing by \pi f undoes the multiplication by \pi f.

$$d=\frac{c}{\pi f}$$

Solve for c

$$c=\pi df$$