17. It would be about 155 
        
             
        
        
        
Answer:
No, You divide 3.56/4 and you get 0.89 and then after that you multiply it by 7 so you do0.89x7=6.23
Step-by-step explanation:
 
        
             
        
        
        
Step-by-step explanation: do fast 
when you will upload the picture do fast
 
        
             
        
        
        
Answer: 1639.08
Step-by-step explanation: To find the surface area of a cylinder, multiply 2(3.14)times the radius squared. Your answer is 508.68. Then multiply 2(3.14)times the radius and the height. You'll get 1130.08. add the answers you got from both equations together. That's the surface area of your cylinder. If you have any more questions, please let me know. 
 
        
             
        
        
        
( square root 2) + 2 
= 2+ square root 2 
I hope that's help ! If you have questions please just let me know