Changing Areas, Changing Perimeters


2 by 7 4 by 4 3 by 6
1 by 9 2 by 8 5 by 5
1 by 15 1 by 16 3 by 8
 
    impossible    
         
e.g. 0.5 by 9.5       impossible
         
    e.g. 0.5 by 32