The density of paper ranges from 250 kg/m3 (16 lb/cu ft) for tissue paper to 1,500 kg/m3 (94 lb/cu ft) for some speciality paper. Printing paper is about 800 kg/m3 (50 lb/cu ft).

Answer this question, if possible (if impossible, reply "unanswerable"):  What is the uncommon density of printing paper?
unanswerable