Solve d=1/2hr

$$d = \frac { 1 } { 2 } hr$$

Solve for h

$$\left\{\begin{matrix}h=\frac{2d}{r}\text{, }&r\neq 0\\h\in \mathrm{R}\text{, }&d=0\text{ and }r=0\end{matrix}\right.$$

Steps for Solving Linear Equation

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

$$\frac{1}{2}hr=d$$

The equation is in standard form.

$$\frac{r}{2}h=d$$

Divide both sides by \frac{1}{2}r.

$$\frac{2\times \frac{r}{2}h}{r}=\frac{2d}{r}$$

Dividing by \frac{1}{2}r undoes the multiplication by \frac{1}{2}r.

$$h=\frac{2d}{r}$$

Solve for d

$$d=\frac{hr}{2}$$