Respuesta :

Answer: 8cm

Step-by-step explanation: area= width*height

Answer: x = 8cm

Step-by-step explanation:

A = 51,2cm²

w = 6,4cm

A = l × w

l = [tex]\frac{A}{w}[/tex]

I = [tex]\frac{51,2}{6,4}[/tex]

l = 8cm