area del trapecio

Usa la fórmula para trapecios: $${\mathtt{A}} = {\frac{\left({\mathtt{b1}}{\mathtt{\,\small\textbf+\,}}{\mathtt{b2}}\right)}{{\mathtt{2}}}}{\mathtt{\,\times\,}}{\mathtt{h}}$$

Este es el trapecio > > >