need help with geometry

Mathematics
Tutor: None Selected Time limit: 1 Day

Jun 2nd, 2015

This is a square prism

Surface area = 2a^2 + 4ah = 2*8^2 + 4*8* 12 

                                             = 128 + 384

                                              = 512 square inches

Please let me know if you have any questions and best me if you are satisfactory.

                   

Jun 2nd, 2015

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