Hi, with a circle, I scaled, extruded and moved it a bit and made it into an eating plate. The only problem is that when texturing an object, one side is textured but the other becomes transparent. Please help me out here, I attached the .blend file and the .jpg file I want the object to be textured with. Thanks!
Your model needs to have a depth like a real world plate, to be like a real solid.
For your model the Solidify modifier will do a good job at building a depth automatically (and you can adjust the thickness setting according to how much solid you want the model to be)