6 is the answer I believe
        
             
        
        
        
You can not "solve" this, so to speak, rather simplify this expression. Take the "2" and multiply that by the "a" and the "3" in the parentheses. You will then have the simplified answer of: 2a times 6. 
Hope that helps!
        
             
        
        
        
Answer:
a. it has reflectional symmetry with 16 line of symmetry
 
        
             
        
        
        
Answer c
Another name for the height of a pyramid is the altitude of the pyramid.