Math question just need to make sure i have the right formula

Mathematics
Tutor: None Selected Time limit: 1 Day

What is the general formula for surface area? I have a math test tomorrow!

Jun 1st, 2015

2pi r^2 +2pirh.........for closed

pir^2+2pirh...................open one side

2pirh.....................open both ends

Jun 1st, 2015

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