The answer that you are looking for is A. 40 to 27
 
        
             
        
        
        
We can divide that up into two rectangles, say the bottom one 8 feet wide and 2 feet high.  That leaves 5.5 by 6-2=4 feet for the other.
Cost = price × area = 2.25(8×2 + 5.5×4) = $85.50
Answer: $85.50
 
        
             
        
        
        
A suitable statistics calculator gives the probability that 6 or more show up as being about ...
  0.2539