Respuesta :

to find P , you need to add the lengths of all sides
8 1/2+6 8/9 +2 8/9 +3 1/2= (8 1/2+3 1/2)+(6 8/9 +2 8/9)=12 +8 16/9= 
=12 + 8+1+7/9=21 7/9