Q: In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Problem: the area of a square is equal to twice the area of a rectangle of dimensions 32 cm * 64 cm . what is the perimeter of the square ? 
Options: ['a ) 236', 'b ) 256', 'c ) 456', 'd ) 656', 'e ) 756']
A:
b