SOLUTION: The lateral surface area of the square prism is 324 square units. What is the length of the side?

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Question 610770: The lateral surface area of the square prism is 324 square units. What is the length of the side?

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, 



 lateral surface Area (4 sides) = 2lh + 2wh    ||Note square prism, l = w = h = x

     2x^2 + 2x^2 = 324

           4x^2 = 324

            x^2 = 81

             x = 9   (throwing out negative solution for length of a side)