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# What is the derivation of the formulae of the surface area of a cuboid?

Updated: 12/7/2022

Wiki User

14y ago

You have six faces. Two are bounded by length and width, two by length and depth, and two by width and depth. Each face has an area of the two dimensions that bound it (from the formula for the area of a rectangle).

F1 = L * W

F2 = L * W

F3 = L * D

F4 = L * D

F5 = W * D

F6 = W * D

Adding these six together gives the total surface area, which, simplified, produces:

SAcuboid = 2(LW + LD + WD)

Wiki User

14y ago

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Q: What is the derivation of the formulae of the surface area of a cuboid?
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