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To find the l.a., you multiply the perimeter of the base (the hexagon) by the height.
l.a. = 60 x 12
surface area is harder :(
you have to find the apothem and all that jazz. sorry i can't help more, good luck!

It is already in the simplest form. It can be written as 0.216 in decimal form (rounded to 6 decimal places).