Approximately 1885 Square feet of roofing.
A square of asphalt shingles, installed according to mfg instructions, covers 100 sq. ft.
1 roofing "square" = 100 square feet. 100 square feet = one square
In roofing terminology, a "square" is 100 square feet; of 9.29 square meters.
10ft. By 10ft.-100 square feet
Not sure, but one bundle covers 33.33 square feet. 3 bundles to a square.
Roofing paper, or felt, normally comes in about 150ft rolls and are 3ft wide. Figure about 450 square feet of felt. Remember when estimating required amounts that you need to overlap the felt about 6 inches or so. With an overlap of 6 inches, 1 roll has a coverage of about 375 square feet.
In roofing, it is the weight of the roofing in pounds per 100 square feet of coverage.
10 feet x 10 feet
The roofing industry speaks of a "square" as meaning 100 square feet. So, if your contractor says your roof is about 9 squares, he means it will require about 900 square feet of materials in order to cover the surface area of your roof.
If I recall from my roofing days, a square is 3 bundles of shingles. Those 3 bundles cover 100 of square feet.
A roofing square is 100 square feet of materials.