Question 12 - Stage 1

A \(9\) by  \(9\) by  \(9\) cube is made up of  \(729\) unit cubes.

Entire columns of unit cubes are removed so that the resulting view of each face is as shown above (where the black squares indicate a hole running through the entire cube).

If the resulting object has surface area \(A\) square units, what is \(A\)?

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