Question 756917
Perimeter = 2 x length + 2 x breadth
   13cm = 2 x 4 3/5 + 2 x breadth
    65/5 = 46/5  + 2 x breadth
    65/5 - 46/5 = 2 x breadth
         19/5 = 2 x breadth
         Divide both sides by 2
         19/10 = breadth.
Proof:
 Perimeter = 2 x length + 2 x breadth
           = 2 x 23/5 + 2 x 19/10
           = 46/5 + 19/5
           = 65/5 cm
           = 13 cm.
Hope this helps.
:-)