Average:
1500 square feet per 5 US Gallons = 139.4 square meters per 18.9 Litres.
Precast:
1750 square feet per 5 US Gallons = 162.6 square meters per 18.9 Litres.
Power Trowel:
2000 square feet per 5 US Gallons = 185.8 square meters per 18.9 Litres.
Polished Concrete:
800 square feet per 5 US Gallons = 74.22 square meters per 18.9 Litres.