[tex]\boxed{A=93.5in^2}[/tex]
To find the area of an ordinary piece of copier paper I have attached a figure below. As you can see, this ordinary piece of copier paper is a rectangular shape having the following dimensions:
THE FIRST SIDE:
[tex]L_{1}=8.5in[/tex]
THE SECOND SIDE:
[tex]L_{1}=11in[/tex]
The area of a rectangle can be found as:
[tex]A=L_{1}\times L_{2}=(8.5)(11)=93.5in^2[/tex]