It depends on the paint, and the surface that you are painting - including its preparation.
About 8 liters for a smooth to semi smooth surface
Look on the paint tin. Different paints have different coverage which also depends on the surface being painted: its porosity, preparation and so on.
Paint coverage depends on the type of paint (acrylic, alkyd, enamel, latex, etc.), the texture and absorbency of the surface to be painted, and the type of application (brush, roller, or spray). A first coat of paint usually requires more paint than a second or third coat because it reduces absorbency by making the surface smoother. Most paint manufacturers specify coverage for their paint to be somewhere around 8.6 square meters per liter, so it would probably take about 1.5 liters to cover 12.15 meters with a single coat.
2200/400 = 5.5 cans
4 l of paint will cover about 34.5 m²
It depends on the paint, and the surface that you are painting - including its preparation.
That depends on how thick you paint, and how many layers of paint you use.
If your drum is a 55 gallon drum and your paint can cover 400 square feet per gallon then you may cover (one coat only) a square almost 150 by 150 feet.
About 8 liters for a smooth to semi smooth surface
Look on the paint tin. Different paints have different coverage which also depends on the surface being painted: its porosity, preparation and so on.
Single coat ,100sqft Double coat 50sqft
Paint coverage depends on the type of paint (acrylic, alkyd, enamel, latex, etc.), the texture and absorbency of the surface to be painted, and the type of application (brush, roller, or spray). A first coat of paint usually requires more paint than a second or third coat because it reduces absorbency by making the surface smoother. Most paint manufacturers specify coverage for their paint to be somewhere around 8.6 square meters per liter, so it would probably take about 1.5 liters to cover 12.15 meters with a single coat.
2200/400 = 5.5 cans
400 Square Feet.
A square unit is equal to 100 square feet so 2200 square units equals 220,000 square feet. One gallon of paint will cover approximately 400 square feet which means 550 gallons of paint are needed. If you plan on a double coat 1,100 gallons are needed. It will take 550-1,100 1 gallon cans of paint to cover 2,200 square units.
It depends how thick your layer of paint is.