Litres is better to measure quantities larger than a quart.
.25 Liters Because there are 1000ml in a liter and 250/1000 is .25
That depends on how thick you paint, and how many layers of paint you use.
13 liters = about 3.434 US gallons.
It depends how thick your layer of paint is.
minimum 140 liters to wash a car
1
It depends on the paint and on the surface that is being painted - its pre-treatment, porosity etc.
About 8 liters for a smooth to semi smooth surface
6.5 liters.
he should use 25
4 l of paint will cover about 34.5 m²