Question

Find AB… pls help thx

Answer 1

`\textit{midsegment of a trapezoid}\\\\ m=\cfrac{a+b}{2} ~~ \begin{cases} a,b=\stackrel{parallel~sides}{bases~\hfill }\\[-0.5em] \hrulefill\\ a=11.5\\ m=18.7 \end{cases}\implies 18.7=\cfrac{11.5+b}{2} \\\\\\ 37.4=11.5+b\implies 25.9=b=AB`