Answer:348
Step-by-step explanation:
 
        
             
        
        
        
X=34.78 y= 238.8..............
        
             
        
        
        
'Commutative' means you can work it in the other direction without changing it.
But 1/2 is not the same number as 2/1 . So I guess division is NOT commutative.
        
             
        
        
        
Answer:
3.56 cm.
Step-by-step explanation:
1/3 π r^2 h = V
1/3 π (5.13)^2 h  = 98
h = 98 / (1/3 π (5.13)^2)
=  98 / 27.55899
= 3.556.