Problem: the length of a rectangle is twice the breadth . if the area is 128 cm 2 , determine the length and the breadth . 
Options: ['a ) b = 2 , l = 9', 'b ) b = 8 , l = 16', 'c ) b = 9 , l = 9', 'd ) b = 4 , l = 14', 'e ) b = 3 , l = 9']
b