Answer:1/16
Step-by-step explanation:1/4= .25 
Divide .25 by 4( for the four students) = .0625 
.0625 is equivalent to 1/16
 
        
             
        
        
        
Use the volume of a cylinder equation, V = pi*r^2*h to find the volume of the cylinder. To find the answer to the second one, find the volume of the square and subtract the volume of the cylinder from it.
        
             
        
        
        
Answer:
15y=-1/3x+5
Step-by-step explanation:
 -5x15y=-5x+75
 
        
             
        
        
        
Answer:
65 because 12 plus 9 is 21 then 3 times 21 is 65