1 dm^3 = 1 dm x 1 dm x 1 dm = 10 cm x 10 cm x 10 cm = 1000 cm^3 = 1000 ml = 1 liter There is 1 liter in 1 cubic decimeter.
40 liters is about 1.41 cubic feet.
Two (2) liters.
8 liters
8 cubic decimeters = 800 liters