Can you please tell me the answer to this question?

Dear Student 
​​​Given radius of the circle = 7 cm
 diameter of the circle must be the diagonal of the square.

Let the side of the square be 'a' cm.

Therefore, diagonal of square

Now, diameter of the circle = 2 ×7 cm = 14 cm

Now, area of square = a² = (7√2)² = 7√2 × 7√2 = 98 cm<sup>2

Area of shaded region = area of circle - area of square
                                        $$\begin{gathered} =\pi r^2-a^2 \\ =(3.14\times 7\times 7)-98 \\ =153.86-98 \\ =55.86c{m}^2 \end{gathered}$$
Regards</sup>