Finding surface area: nets of polyhedra | Perimeter, area, and volume | Geometry | Khan Academy
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Now we shift our focus towards surface area (which is the sum of all the areas of all the shapes that cover the surface of the object). Let's apply it to the polyhedra net we learned about in the previous video. We'll walk you through it. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/basic ...
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