Answer:
rc  length  =  10 * 8pi/5
  =   16pi
This is the circumference of the base
(a)   2pir     =   16pi  where  r  =  radius of base
   2r     =    16
    r     =  8 cm
(b)   10^2    =   h^2   +  8^2
  h^2    =   100  -  64
   =    36
 h      =    6 cm
 
        
                    
             
        
        
        
We will owes 0 dollars cause 164 multiply by 12 = 1968
        
             
        
        
        
Hey,
The lower quartile is the median of the lower half of the data set.
The median is the middle most number or the average of the two middle most numbers depending on how many values there are.
Cheers,
Izzy