There are about 4 inches to a decimeter. Or 3.94 and a bunch of smaller numbers.
51.1811024 inches
0.254 dm = 1 in (exactly) → 1 dm = 1 ÷ 0.254 in → 1 dm^3 = 1 dm x 1 dm x 1 dm = (1 ÷ 0.254 in) x (1 ÷ 0.254 in) x (1 ÷ 0.254 in) = 1 ÷ (0.254^3) cu in → 15615 dm^3 = 15615 ÷ (0.254^3) cu in ≈ 952886 cu in
1 dm
16 (for a round number)
10 cm in 1 dm
1 dm is equal to 100 mm (as 1 dm = 10 cm 1 cm = 10 mm)
1 meter in 10 dm
100 mm = 1 dm
1 km = 10000 dm 20 km = 200000 dm
1 dm = 10 cm 200 dm = 2000 cm
1 dm = 10 cmSo 5 cm = 0.5 dm
1 dm³ = 1 l → 200 dm³ = 200 liters.