480 square feet ! (2 x 3 x 80)
576square feet
The answer will vary slightly depending on assumptions: will the slabs have a space between them, and will you be cutting the slabs to fill fractions. 21 feet is equal to 14.2 of the 450 mm slabs. 19 feet is equal to 12.9 of the slabs. To complete the rectangular area, 14.2 x 12.9 = 183 slabs.
The answer will depend on the size of the patio slabs.
Area of paving slab = 0.3 m * 0.3 m = 0.09 sq metres. So number of slabs required = 22/0.09 = 244.44.. recurring = 245. However, that is the minimum mathematical answer. In real life you may well require more if the area to be covered is awkward or if you do not want to use all the off-cuts and end up with a mosaic.
That would certainly do it.
150 sq ft = 13.94 sq metres, approx. That area would require 68.8 or 69 slabs. However, this assumes that the area to be covered is "well-behaved" and that wastage is kept to a minimum.
You will need 63 44cm x 44cm slabs to cover that area.
To fill it in,32400in3
Area to be covered = 12ft * 14ft = 3657.6 mm * 4267.2 mm = 15,607,711 mm2 Area of each slab = 900mm * 600 mm = 540,000 mm2. So, number of slabs required = 28.9 ie 29 slabs. That is the mathematical answer. It assumes that almost all offcuts can be used up and that there are no breakages. In "real life" it is advisable to allow 5-10% for wastage.
576square feet
Area of slab = 0.6 m * 0.6 m = 0.36 sq metres Minimum number of slabs required = 9/0.36 = 25. This minimum number is based on the assumption that the area to be covered is a reasonable shape so that only a few slabs need cutting and that all the resultant offcuts are used - even if part of the area looks like crazy paving!
The answer will vary slightly depending on assumptions: will the slabs have a space between them, and will you be cutting the slabs to fill fractions. 21 feet is equal to 14.2 of the 450 mm slabs. 19 feet is equal to 12.9 of the slabs. To complete the rectangular area, 14.2 x 12.9 = 183 slabs.
The answer will depend on the size of the patio slabs.
450mm*450mm = 0.2025 sq metres. Area to be covered = 1 square metre So number of flags required = 1/0.2025 = 4.9, or 5. However, 5 will leave the area looking like a mosaic.
Crust
A yard is 3feet. A square yard is 3feet x 3feet; therefore, a square yard is 9sqaure feet. 5feet x 4feet is equal to 20sqare feet. To calculate the area in square yards, devide 20 square feet by 9 square feet. The answer, therefore, is 2.22 square yards.
If most of the off-cuts are also used then you will need 315 slabs. Otherwise you will need a lot more.