Respuesta :

Answer:

25cm.

Step-by-step explanation:

Length = x+9

width = x

Perimeter = 2*width + 2*length

Perimeter = x+x+x+9+x+9

Perimeter = 4x+18=82

                        -18   -18

4x=64

/4    /4

x=16 cm.

Length = x+9

16+9= 25cm.