What is size screen of multiplex theater?

It should be smaller than normal theatere as the room size is smaller and number of audience is less than 300 in each Audi. The benefit of small screen is that we can even run movie with a LCD projector and a HD player (blue ray or MP4 like divx, Xvid) where in normal theatere with big screen requires film pojectors. Muliplex can run a movie with a 2048 x 1080 resolution which slightly higher than HD video (1920 x 1080)