Check the picture below.
[tex]\textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h=height\\ a,b=\stackrel{parallel}{sides}\\[-0.5em] \hrulefill\\ h=8\\ a=14\\ b=8 \end{cases}\implies \begin{array}{llll} A=\cfrac{8(14+8)}{2}\implies A=4(22) \\\\\\ A=88 \end{array}[/tex]
