Massive digital paintings. Surreal landscapes. Stream of Consciousness. Random scribbles become recognizable. For Example “Mega Mural 3″, if printed at 72 PPI, would cover a 30′ x 46′ wall and look good from 9′-10′ back. Additionally, It could be printed at a high quality of 300 PPI to a print size of 30″ x 45”.
Check out this Print – Pixel Calculator : https://www.nationsphotolab.com/pixelchart.aspx
Another Link for more about resolutions PPI and DPI: https://www.nationsphotolab.com/guide/image-resolution