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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.
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How many square paving slabs each of 50 cm are needed to cover a 8 m by 5 m rectangular yard?
Each slab is .5 x .5 = .25 square m. Yard is 8x 5 = 40 square m so you need 40/.25 = 160 slabs
How many paving stones each measuring 2 m by 2 m are required to pave a rectangular courtyard 30 m long and 16 m broad?
Area of one paving slab = 2 x 2 = 4 m2 Area of courtyard = 16 x 30 = 480 m2 Slabs needed = 480/4 = 120.
How many 18inch by18 inch pavers would you need for a patio 10 foot by 12 foot?
53 and 1/3 paving slabs exactly.
How many paving slabs 450mmx450mm needed to cover 15 sq m?
Area of each paving slab = 0.45 m* 0.45 m = 0.2025 square metres Therefore, number of pavers required = 15/0.2025 = 74.07 = 75 pavers. That is the mathematical answer and assumes that the 15 sq metre area is well behaved. That is to say, all the offcuts can be used without compromising the appearance.
How many paving slabs would you need to cover 5 meters x 8 meters if flags are 450mm x450 mm?
first lets convert m to mm.we know, 1 m=1000 mm. 5 m =5000 mm and 8m=8000mm. Now, no.of paving slab = area of flags /area of slab . =5000 X8000/450 x 450. =197.5 = 197 slabs.
