Please help. I've been trying to figure this out for an hour and I still don't understand how it's 72. I feel really stupid because it's probably easy to do.

The area of the shaded region is 72π.
Step-by-step explanation:
The radius of the circle is 24.
The angle of the shaded region is 45°.
The formula to find the Area of shaded region[tex]A=\frac{N}{360}(3.14(r^{2}))[/tex].
where N is the angle of the shaded region and r is the radius of the circle.
[tex]A=\frac{45}{360}(3.14(24^{2}))[/tex].
[tex]A=\frac{1}{8}((3.14)(24)(24))[/tex].
A=3.14× 24×3.
A=72π.
So the area of the shaded region is 72π.