The surface area of a polyhedron can be found by?

Answer 1

multiplying the perimeter of the base by the height and adding the area of both bases.

sum of the area of its faces

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The first answer works only for a prism, not for polyhedra in general.

Answer 2

Well, honey, to find the surface area of a polyhedron, you gotta calculate the sum of the areas of all its faces. It's like wrapping a present - you gotta measure each side to know how much paper you need. So, grab your ruler, add up those face areas, and voilà, you've got the surface area of that geometric beast.

Answer 3

Using the formula LA + 2B