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Gravel is bought in cubic quantities, or by weight.
You ask "to fill" but you only give a square measure. The volume of gravel required wil depends on the depth you wish the gravel to be.
To fill 81 square metres to a depth of 5 cm would require 4.05 cubic metres of material.
What else can I help you with?
How much is 500 meters squared in inches squared?
500 m2 = 775,001.55 inches squared.
How much area will a cubic yard of gravel fill?
it depends how thickly you lay it.
How much gravel do you need to fill 255 square feet 3 inches deep?
about 71 cubic metres of gravel i think
How much gravel to fill a 6' x 6' x 4' hole?
16 cubic yards
Why are the units for volume and surface area raised to different powers?
Surface area is the sum of the areas of all the surfaces of an object. When you add units, they stay the same. Since you are adding, let's say, meters squared and meters squared and meters squared, your unit is still meters squared. Volume is a measure of how much space is inside an object. To find volume, you must multiply length, width, and height. In our example, that would be meters x meters x meters. When you multiply units, they multiply to each other. So, we get meters cubed, or meters^3.
How much is a thousand square meters?
100 meters squared
How much is 500 meters squared in inches squared?
500 m2 = 775,001.55 inches squared.
How much is L in Meters squared?
unit of area
How much area will a cubic yard of gravel fill?
it depends how thickly you lay it.
How much gravel do you need to fill 255 square feet 3 inches deep?
about 71 cubic metres of gravel i think
How much is 8 feet in meters squared?
2.438 2.438
How much is 19ftx10ft in metre square?
17.65 meters squared
How much is 392 meters squared?
4,219.5 square feet.
How much area is 4 squared meters in feet?
Four square meters is 43.1 square feet.
471 meters squared is equal to how much square feet?
471 (square meters) = 5,069.80181 square feet.
How much gravel to fill a 6' x 6' x 4' hole?
16 cubic yards
How much is 8500 meters squared?
85002 is 8500 x 8500 which is: 72250000
