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I take it you mean the surface of the cuboid of those dimensions.

A quick sketch on paper, as you can't create it in a simple text editor, helps in cases like this.

Taking the 2 x 2 faces first, their total area = 2 x (2 x 2) = 8 cm^2

Now the 2 x 1 faces: 4 x ( 2 X 1) = 8cm^2.

So total surface area of the cuboid = 8 + 8 = 16 square centimetres.

[Edited to try to force paragraphs on this wretchedly basic text system!]

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Q: What is the total surface area of 1Cm x 2Cm x 2Cm?
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