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Q: How many 400x400mm slabs do you need for an area of 10ftx8ft?
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How many patio slabs to cover a area of 9 meters to 2 square meters?

The answer will depend on the size of the patio slabs.


How many 450mm x 450mm garden slabs do you need for garden area of 21ft x 19ft?

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.


How many 600mmx600mm slabs do i req to cover an area of 450sq'?

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How many 450 mm x 450 mm patio slabs do you need in a 150sq ft area?

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.


How many 900mmx600mm slabs do you need for area 12ftx14ft?

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.


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