Complete the following tutorial to form the shape.
On the Front Plane, draw a square using the 'Center Rectangle' tool centred on the origin.
Extrude the square to form a cube using the 'Mid Plane' option.
On the Front Plane, draw an arc forming a semi-circle centred on the origin and lines as shown in figure 2. Ensure the arc and edge of the cube have a 'Coincident' relation.