Answer:
Its about 678.584
Step-by-step explanation:
First plug in your given info so put 6 for the r and 6 for thr h. the r stands for radius and the h stands for hight. Then solve for 6 squared which is just 6*6 which is 36 then multiply that by 6 to get 216. then multiply 216 by pie to get your answer.  
If you need further explanation just comment on this for help
 
        
             
        
        
        
Answer:
If you are trying to simplify this, the answer would be: 
Hope this helps! If not, feel free to comment below and I'll see what else I can do to help. Thanks and good luck!
 
        
             
        
        
        
#4 is D 8.5 oz, do 3.4 / .4 
#5 is C .96$, do (3/4)x=36 and you get 48 x .02 and you get .96
if this helps please mark branliest, Trying to rank up haha