when i did this i got a different number?! help?!

http://melheart47.tumblr.com/

If r = 9 units and X = 9 units, then what is the total surface area of the cylinder shown above?

A. 243 square units

B. 891 square units

C. 1,458 square units

D. 324 square units

Question

when i did this i got a different number?! help?!


http://melheart47.tumblr.com/

If r = 9 units and X = 9 units, then what is the total surface area of the cylinder shown above?  
 

  A.  243 square units 
 
  B.  891 square units 
 
  C.  1,458 square units 
 
  D.  324 square units

directrix · Answer

Do you have your work so that you can post it here?

anonymous · Answer

http://www.mathsteacher.com.au/year9/ch14_measurement/15_total/cylinder.htm

anonymous · Answer

when i did i got 28,45 pie

directrix · Answer

I wanted to look at your work to see the equation and work that gave rise to the "28,45 pie:"

directrix · Answer

I am not gettiing any of these answers. 

Question: --> Are both r and x = 9?  ----> If r = 9 units and X = 9 units

anonymous · Answer

Yeah I'm not getting any of the listed options either.