Answer:
5400
Step-by-step explanation:
6x900 =5400 this is the correct answer
 
        
                    
             
        
        
        
Edges that are perpendicular to PR basically means what edges make a 90° angle with PR.
Those edges are HP , RA, TR and QP.
Hence, the answer is A, B and C.
        
                    
             
        
        
        
Answer:
Definitely not a 
Step-by-step explanation:
On “edge” it’s not a. I got it wrong and I failed with a 60
 
        
                    
             
        
        
        
Answer:
48?
Step-by-step explanation:
If x = 30 and y = 36 
(Instead of 6 add 8 to 40 to be proportional