It depends on what type of roofing you are talking about. Are you talking about wood shake shinlges ?
How much dose 3 square of roofing cover
If you are ordering a 20 or 25 year shingle (and some 30 year shingles) then the answer is .33 sq or 33 sq ft of roofing per bundle. If you are getting a better quality of roofing material, then you should get 4 bundles per square or .25 sq per bundle or 25 sq ft of shingles per bundle.
9 bundles assuming std. 3 bundle/sq. shingles
To cover 16 squares of roofing, you typically need about 2 to 3 bundles of shingles per square, depending on the type of shingles used. Each bundle usually requires around 30 to 40 roofing nails. Therefore, for 16 squares, you would need approximately 960 to 1,920 roofing nails, assuming an average of 60 to 120 nails per bundle. Always check the manufacturer's specifications for exact requirements.
In roofing terminology, a "square" is 100 square feet; of 9.29 square meters.
Each bundle of rooring shingles covers about 33 sq ft. 480 / 33 = 14.54545 bundles. so you need to buy 15 bundles of shingles.
A 'bundle' is an arbitrary amount - Usually we talk about 'squares' in roofing. One 'square' is 100 square feet
33.3
To determine the number of bundles of roofing shingles needed to cover 1280 square feet, you first need to know that one bundle typically covers about 33.3 square feet. Dividing 1280 by 33.3 gives approximately 38.3 bundles. Since you cannot purchase a fraction of a bundle, you would need to round up, requiring a total of 39 bundles to cover the area adequately.
3 square feet
To determine how many bundles of roofing shingles are needed to cover 2,100 square feet, you first need to know that one bundle typically covers about 33.3 square feet. Dividing 2,100 by 33.3 gives you approximately 63.1 bundles. Since you can't purchase a fraction of a bundle, you would need to round up to 64 bundles to ensure complete coverage.
That would be one square and one bundle. Better buy a square and two bundles, though, to cover wastage.