If the dimensions of a square pyramid are measured in meters, then the surface area of the pyramid is measured in meters square meters cubic meters

If the dimensions of the square pyramid are in meters, the surface area can be calculated as follows;
Surface area = area of square base + area of lateral faces 
                      = (side length of square )² + (1/2 * slant height* perimeter)
If we substitute the equations with the units of the dimensions 
area               = (meters)² + (1/2* meters * meters)
                      = m² + m²
total area       = m²
therefore the area is obtained in square meters (m²)

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