If r = 9 units and X = 9 units, then what is the total surface area of the cylinder shown above?
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A. 243 square units

B. 891 square units

C. 1,458 square units

D. 324 square units

Question

If r = 9 units and X = 9 units, then what is the total surface area of the cylinder shown above?  
 http://melheart47.tumblr.com/

  A.  243 square units 
 
  B.  891 square units 
 
  C.  1,458 square units 
 
  D.  324 square units

anonymous · Answer

2 π r2 + 2 π r h is the formula r is 9 and h is 9 plug it in

directrix · Answer

When I worked this just now, the answer I got was not one of the options.

SA = 2 pi rh + 2pi r^2
SA = 2 pi (9)(9) + 2 pi (9)^2
SA = 162 pi + 162 pi 
SA = 324 pi
SA = 1017.36 approx  --> May someone can find the error.