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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!]
Volume of a cuboid = widthxlengthxheight; therefore V = 2cm x 4cm x 1cm = 8cm3
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If the shape is a cuboid, then the volume is 4 cubic centimetres.
base x height = area 2 cm x 2cm = 2cm^2 (squared) :)