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Surface area using nets

Check out this cube:
The figure presents a cube. The length of one edge is labeled as 3 units
Find the surface area of the cube (above) using its net (below).
The figure presents a surface net of a cube. The net consists of 4 squares connected in a row. The second square from the left is also connected to a square above it, and a square below it. The length of one side of one square is labeled as 3 units.
units2^2