Answer:
the answer is any number above 18
 
        
                    
             
        
        
        
Step by step:
 3	2	1
× 6	4
————————————-
+ 1	2	8	4
+ 1	9	2	6	0 
————————————-
= 2	0	5	4	4
        
             
        
        
        
The dimensions are Width of the rectangle = 7.2 cm
Length of the rectangle = 4x + 9.7
                                      = 28.8 + 9.7
                                      = 38.5 cm. thats all
        
             
        
        
        
The answer for 2 is 192. The answer for 4 is 672.