Answer:
538 cm^2
Step-by-step explanation:
Because it is a square, the diameter of the semi circle is 24 and the radius is 12.
To find the area of the shaded region, we must subtract the area of the square and the area of the semi-circle.
(24×24) - (12×3.14) = 538.300... =538 cm^2 (corrected to 3 significant figures)