]We have different measure they are equivalents
1 inch = 2.54 cm
1 pound= 0.453 kg
1 gallon = 3.8 liters
then we can do the equivalences, as we can notice the measurements units are rounded so
1 in --- 2 centimeters
5 pound ----0.453*5 kg=2.26 kg =2 kilograms rounded
1 gallon = 4 liters