Respuesta :

oriboy123

Answer:

[tex]l=\frac{2(A+B)}{p}[/tex]

Step-by-step explanation:

[tex]A=\frac{1}{2} pl+B[/tex]

[tex]A-B = \frac{1}{2} pl[/tex]

[tex]2(A-B)=pl[/tex]

[tex]\frac{2(A+B)}{p} =l[/tex]