The rule for S.A = 2bh + 2bw + 2hw
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You need to find the area of each two dimensional surface on the figure. Do you have a specific figure in mind?
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find the area of triangles(reflecting surfaces) and also the area of rectangle or square(base)and find the sum of both.
False. You must find the area of each of the faces, then add those together.
A quadrilateral does not have a surface area because it is not a voluminous figure.