When talking roofing materials. A square is considered a 10'x10' area or a 100 square feet. So you have 1,900 square feet. There are two basic types of felt: 15lb and 30lb felt. 15lb felt covers 4 sq= Total needed will be 5 rolls 30lb felt covers 2 sq= Total needed will be 10 rolls (*note, 30lb is more thick and better for your roof.
310.5 sq ft
13 ft by 23 ft = 299 ft2 and one standard sheet of plywood is 4 ft by ft = 32 ft2. 299 / 32 = 9.34 sheets, so you will need to purchase 10 sheets of plywood.
23 square feet = about 2.14 square meters. (2.13676992 square meters)
One sheet (4 ft x 8 ft) = 32 ft2 You might need to cut the sheet to fit in the specific space you have, but one sheet will have enough material to cover 23 square feet.
To cover a 12.5 x 23 ft room, you first calculate the area: 12.5 ft × 23 ft = 287.5 square feet. Each 4x8 sheet of plywood covers 32 square feet (4 ft × 8 ft). Dividing the room area by the sheet area gives 287.5 sq ft ÷ 32 sq ft/sheet ≈ 9 sheets. Therefore, you would need approximately 9 sheets of plywood to cover the room, but it's wise to purchase an extra sheet for mistakes or cuts.
Two.
0.23 acres is 10,018.8 square feet.
943 sq ft 9 and 1/2 squares of roofing
There are 3 bundles of shingles in every square. A square is 100 square feet. In 23 bundles, you would have 766 square feet approximately
0.23 acres is 10,018.8 square feet.
23 square feet = about 2.14 square meters
It is: 23 times 23 = 529 square feet