Answer:
Constant of proportionality(X:Y) = 1:6 
Step-by-step explanation:
Given:
 X- 5, 6, 7, 8, 9 
Y- 30, 36, 42, 48, 54
Find:
Constant of proportionality
Computation:
X/Y = 5/30 = 6/36 = 7/42 = 8/48 = 9/54
X/Y = 1/6 = 1/6 = 1/6 = 1/6 = 1/6
So;
Constant of proportionality(X:Y) = 1:6 
 
        
             
        
        
        
Answer:
Below
Step-by-step explanation:
Use the formula 2πr^2 + 2πrh to find the Surface area of a cylinder 
A = 2π(11)^2 + 2π(11)(11) 
   = 1520.53084....
Rounding to the nearest 10th 
   = 1520.5 in^2
Hope this helps!
 
        
             
        
        
        
Answer:
B
Step-by-step explanation: