Paper × 841 mm). A1 is half the size of a sheet of A0 (i.e., 594 mm × 841 mm), such that two sheets of A1 placed side by side are equal to one sheet of A0. A2 is half the size of a sheet of A1, and so forth. Common sizes used in the office and the home are A4 and A3 (A3 is the size of two A4 sheets). The density of paper ranges from for tissue paper to for some speciality paper. Printing paper is about . Paper may be classified into seven categories: Some paper types include:
How Can I Be Sure How Can I Be Sure "How Can I Be Sure" is a popular song written by Felix Cavaliere and Eddie Brigati, and originally recorded by The Young Rascals for their 1967 album "Groovin'" with a single release in August 1967 affording the group their fourth Top 10 hit peaking at No. 4. "How Can I Be Sure" was one of several songs inspired by group founder Felix Cavaliere's girlfriend Adrienne Becchuri a Pelham (New York) high school student Cavaliere met in 1966 the year he turned 24: "I fell madly in love with this woman who actually turned out to