8 sides
the exterior angle = 180° - 135° = 45° ( exterior/ interior are supplementary )
the sum of the exterior angles of a polygon = 360°
number of sides =  = 8
 = 8
 
        
             
        
        
        
Answer:
51   74 
Step-by-step explanation:
x = smaller 
x +23 = larger 
added together   (x   + x+23)    equal to 28 less than 3x      = 3x-28
x    + x+23  = 3x-28      subtract 2x from both sides of the equation
    23 = x -28      add 28 to both sides
  51 = x      then the larger   =  51 + 23 = 74 
 
        
                    
             
        
        
        
R = radius of basketball
r = radius of tennis ball 
R = 3.6r cube both sides
the ratio of the radii is 1: 3.6
cube both sides to find the ratio of the volumes 
1 : 46.656 ( this many times greater)