What is a roofing square? Essentially it is 100 square feet or a 10Ã10â² block. Because roofs, siding and other big projects are â¦ well, big, using a square foot as a unit of measurement gets complicated. Also, roofing and siding are a commodity now days, so even if you are off by a few sq. feet, it is fine. Itâs not marble flooring, where each tile costs $20 + installation, and when you are off by 30 sq. feet, you can be down $1000.
If your sending letters to people all over the country, your postage cost will be between 21 cents each and 27 cents each. These bulk mail rates are for letter size mail (up to 6.125 x 11.5 landscape only, if you turn it into a portrait orientation it becomes a flat and your postage will increase).
A: According to the U.S. Postal Service, the price of a first-class postage stamp in the United States is 49 cents as of June 2014. This rate applies to standard-sized mail weighing 1 ounce or less. Letters weighing more than 1 ounce cost an additional 21 cents to mail.