A:
Each sheet is 4 inches by 4 and 1/2 (ie 4.5) inches in size.
In units of feet, each sheet is 0.3333 ft by 0.375 ft in size.
The total area per sheet is 0.3333 ft x 0.375 ft = 0.1250 square feet (sqft).
There are 450 sheets per roll, so each roll contains 450sheets/roll x 0.1250sqft/sheet = 56.25sqft/roll.
There are 80 rolls per box, so each box contains 80rolls/box x 56.25sqft/roll = 4500sqft/box.
The current price (09Apr2012) is $49.99 per box, so the price per sqft is,
$49.99/box x 4500sqft/box = $0.01111/sqft.
Answered on 4/9/2012 by chiliconqueso from Los Alamos, NM