Step-by-step explanation:
my answer is in the image above
 
        
             
        
        
        
Answer:
It is, D 
Step-by-step explanation:
Your welcome for raising your test score
 
        
                    
             
        
        
        
Step-by-step explanation:
3+√5+3√5+5
=6√5+5
=6√10
 
        
             
        
        
        
Answer:D
Step-by-step explanation:
Hope this was right.
 
        
             
        
        
        
Hey there :) You'll have to use the formula of cylinder to get your answer :
Surface area of cylinder : 2(pi)(r^2) + 2(pi)(r)(h)
pi = 22.7 or 22/7 
r (radius of cylinder) = 8 mm
h = height of cylinder = 20mm 
●Hence, just substitute your answer in the given formula and also don't forget to check whether the answer required needs to be in mm or cm. 
Hope it helps :)