Intensitas dan Taraf Intensitas

\begin{equation*}
\begin{split}
I &= \frac{P}{4 \pi R^2}\\\\
I &= \frac{P}{4 \pi (10)^2}\\\\
I &= \frac{60}{400\pi}\\\\
I &= \frac{3}{20\pi} \text{ Watt/m}^{2}
\end{split}
\end{equation*}