Not necessarily.
The board could be 529 inches long and 1 inch wide. That would give it an area of 529 sq inches but the board is obviously not wide enough. However, there are configurations such that the puzzle will fit.
The area of Monreale is 529 square kilometers.
The area of Babušnica is 529 square kilometers.
Assuming a 23 metre square, the area is 232 = 529 square metres (529 m2).
Square root 529 which is 23 m
The area of Asunción Province is 529 square kilometers.
The area of Caripe Municipality is 529 square kilometers.
529
The area of Cañada de Gómez is 529 square kilometers.
Area = 23*23 = 529 square miles
23 km * 23 km = 529 km2
Assuming the 23cm refers to the length of its side, the area is 23*23 = 529 cm2
A square with a side length of 23 cm has an area of 529 cm2