Answer: The area of the shape is 48.38 square centimeters.
Step-to-step explanation:-
The side-length of square = 15 cm
Area of square =

Since, the figure shown is formed by the arcs joining the midpoints of the four sides of a square, the radius of the quadrant =

Since, all the interior angles in a square is a right angle, therefore, each quadrant is a sector of 90° in a circle of 7.5 cm radius.
Area of each quadrant=

=

Now, Area of shaded region = Area of square -4 × Area of quadrant
=

Hence, The area of the shape is 48.38 square centimeters.