Solve H=I/2*pir

$$H = \frac { I } { 2 \cdot \pi r }$$

Solve for I

$$I=2\pi Hr$$

$$r\neq 0$$

Steps for Solving Linear Equation

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

$$\frac{I}{2\pi r}=H$$

The equation is in standard form.

$$\frac{1}{2\pi r}I=H$$

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

$$\frac{\frac{1}{2\pi r}I\times 2\pi r}{1}=\frac{H\times 2\pi r}{1}$$

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

$$I=\frac{H\times 2\pi r}{1}$$

Divide H by \frac{1}{2}\pi ^{-1}r^{-1}.

$$I=2\pi Hr$$

Solve for H

$$H=\frac{I}{2\pi r}$$

$$r\neq 0$$