Answer:
-4
Step-by-step explanation:
Rewrite  16 as 4 squared 
Pull terms out from under the radical, assuming positive real numbers
-1 x 4
Then you get the answer -4
 
        
             
        
        
        
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:
Area of  shaded region = 134.13 square feet
Step-by-step explanation:
Area of the shaded region = Area of square - Area of circle
                                          
 
        
             
        
        
        
Answer:
Teaching students and collaborating with teachers on instructional content
Step-by-step explanation:(Hope This Helps)