48)
[tex]\bf \textit{area of a triangle}\\\\
A=\cfrac{1}{2}bh~~
\begin{cases}
b=base\\
h=height\\[-0.5em]
\hrulefill\\
b=16\\
h=14
\end{cases}\implies A=\cfrac{1}{2}(16)(14)\implies A=112[/tex]
50)
[tex]\bf \textit{area of a circle}\\\\
A=\pi r^2~\hspace{7em}\stackrel{r=7}{A=\pi 7^2}\implies A=49\pi \implies A\approx 153.94[/tex]
