extra help
If you are not really getting it, I have found some videos you can use. Just copy and paste these websites into the address bar to get to the video.
For surface area of a pyramid: http://youtu.be/I_U0r7Hn-i0
For surface area of a cube: http://youtu.be/xvyvuWVcflo
For surface area of a triangular prism: http://youtu.be/9pQknZ9fRTA
For surface area of a cylinder: http://youtu.be/-8jMF-VBZoA
I believe that all of these videos will help you understand surface area. These are all by the same guy and he will help you understand.
For surface area of a pyramid: http://youtu.be/I_U0r7Hn-i0
For surface area of a cube: http://youtu.be/xvyvuWVcflo
For surface area of a triangular prism: http://youtu.be/9pQknZ9fRTA
For surface area of a cylinder: http://youtu.be/-8jMF-VBZoA
I believe that all of these videos will help you understand surface area. These are all by the same guy and he will help you understand.