Latex
latex code for the formulas above:
\begin{align*}
\begin{matrix}Quantity\\Name\end{matrix}
\begin{pmatrix}Quantity \\Symbol\end{pmatrix}
&=
\begin{matrix}Numeric\\Value\end{matrix}
\:\:.\:\:
\begin{matrix}Unit\\Name\end{matrix}
\begin{bmatrix}Unit \\Symbol\end{bmatrix}
\\
Area(A)\:&=\Pi .r^{2}[m^{2}]
\end{align*}