Question

aria trapezului avand linia mijlocie si inaltimea

Answer 1

$\displaystyle A=\dfrac{h(B+b)}{2} \\ \\ l_m=\frac{B+b}{2} \\ \\ \implies A=hl_m$

Answer 2

[tex]A=\frac{(B+b)h}{2}\\ L_m=\frac{B+b}{2}\\A_{tr}=L_m\cdot h[/tex]