As a math question... 40 x 60 = 2400 / 900 = 2.6666 rolls.
In flooring, you need to figure where your seams need to be joined and what waste you will have. assuming your roll is 12' wide x 75', you would need 5 pieces x 40' long and have to order 3 rolls.
If you just multiply 11 x 18, you get 198 square feet. However, because carpet often comes on rolls with a fixed width, you can't always just buy the exact square footage you need.
sq.ft. carpet = 5 rolls x 12ft wide x length of roll in feet.
From the info I have from a sod supplier: each roll is 10sqft, there are 70 rolls on a pallet, so covers 700sqft
L x W / 9 = sq yards Multiply the length times the width and divide by 9 to get the square yards. Just remember, the amount you have to buy may be more depending on the size of your room and the sizes of the rolls of carpet available.
It depends on why the other half are disappearing!
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.
4 rolls per square. 100 square feet to a square.
Carpet is usually handled in rolls that are 12 feet wide, so 194 linear feet of carpet would be 12 x 194, or 2328 square feet. However, the most common measurement for carpet is square yards in the US, so you would divide 2328 sq. ft. by 9 sq. ft. to get the square yards, about 259. That would be enough carpet to cover an area 16 yards by 16 yards.
To find your answer we would need the different room dimentions. Carpet comes in different size rolls. Buying the rolls to fit the job eliminates waste.
Sod rolls are 2 feet wide by 5 feet long. Each roll covers 10 square feet. A full skid of sod contains 75 rolls. Multiply, length in feet times width in feet divided by 10 = number of rolls required.
Rolls are generally worse when it is humid. Regardless, rolls in the carpet mean it needs to be stretched. You can rent a carpet kicker, but a pro would be best. They should be using a power stretcher. More often then not when a carpet gets wrinkles or rolls it was because it was not power stretched when installed. Another possibility is heavy furniture was dragged across. Make sure when the carpet is stretched it is first pulled back to make sure the pad is not bunched up as well.
sq.ft. carpet = 5 rolls x 12ft wide x length of roll in feet.
If you just multiply 11 x 18, you get 198 square feet. However, because carpet often comes on rolls with a fixed width, you can't always just buy the exact square footage you need.
30 lb. covers 200 sq. ft. and 15 lb. covers 400 sq. ft. per roll.
From the info I have from a sod supplier: each roll is 10sqft, there are 70 rolls on a pallet, so covers 700sqft
carpet tiles are stored & sold flat carpet that is rolled out is called Broadloom & is usually 12' wide
1 square = 100 square feet x 8 squares = 800 square feet. 15# felt comes in different sizes. Multiply the length of the roll x the width of the roll to find out how many square feet are in a roll. 800 divided by the square feet per roll = how many rolls you need.