how to make the Curve shape and join it with the another mesh I am new to the blender and aiming to make the below model for practice which i picked from google images. But i am having difficulty in making the curve part.



I tried making the curve using another cylinder mesh and solidfy modifier and then used boolean modifier to make the curved hole but how do i make that extruded curve and add it to the mesh.

In the below image i made the curve hole using semi cylinder and boolean modifier. But i dont know how to do the extruded curve and the slant shape.



And in the next image i tried to make the extruded curve but i dont know how to add it to the rest of the mesh. Do I need to make loop cuts in the square below and fill each face or is there any other method.



sorry for the late reply.
To make the semi-spherical shape alone, you can do it this way. If you want to make the whole object in one piece you will have to apply the Solidify modifier and start with this topology, which is totally possible.