A mosaic is made from 27 pieces. Each piece is a​ parallelogram, as shown in the figure. What is the total area of the​ mosaic?

In the figure, each parallelogram has a base of 1 unit and a height of 3 units.

The total area of one parallelogram is given by the formula: area = base * height
So, the area of one parallelogram is 1 * 3 = 3 square units.
Since there are 27 parallelograms in the mosaic, the total area of the mosaic is 27 * 3 = <<27*3=81>>81 square units. Answer: \boxed{81}.