1) ... L=23cm ; l=15cm => P=2*(23+15)=2*38=76cm ;
2) ... L=12dm ; l=8dm => P=2*( 12+8 )=40dm ;
3) ... L=5dm ; l=2dm => P=2*( 5 + 2 )=20dm ;
4) ... L=6cm ; l=4cm => P =2*( 6 + 4 )=20cm ;
5) ... L=1m ; l=1m => P=2*( 1 + 1 ) = 4m ;
6) ... L=4dm ; l=4cm => P=2*( 40+4 ) = 88cm