
$\begin{aligned}
& (4,4 \sqrt{3}) \text { lies on } y^2=4 \mathrm{ax} \
& \Rightarrow 48=4 \mathrm{a} \cdot 4 \
& \quad 4 \mathrm{a}=12
\end{aligned}\Rightarrow y^2=12 xisequationofparabolaNow,parameterofPist_1=\frac{2}{\sqrt{3}} \RightarrowParametersofQis\mathrm{t}_2=-\frac{\sqrt{3}}{2} \Rightarrow \mathrm{Q}\left(\frac{9}{4},-3 \sqrt{3}\right)AreaoftrapeziumPQNM\begin{aligned}
& =\frac{1}{2} \mathrm{MN} \cdot(\mathrm{PM}+\mathrm{QN}) \
& =\frac{1}{2} \mathrm{MN} \cdot(\mathrm{PS}+\mathrm{QS}) \
& =\frac{1}{2} \mathrm{MN} \cdot \mathrm{PQ} \
& =\frac{1}{2} 7 \sqrt{3} \cdot \frac{49}{4}=(343) \frac{\sqrt{3}}{8}
\end{aligned}$