The Surface Area of a solid is the SUM of the areas of ALL of its faces. You can use a 2D representation of a solid called a net to find the surface area of the solid.
(1/2 x 3 x 4) 2 + (5 x 11) + (4 x 11) + (3 x 11) =
12 + 55 + 44 + 33 = 144 cm2
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