How many millimeters are in 50km?

Answer 1

There are 50,000,000 mm in 50km. You can use the formula KHDBDCM. K=kilo H=hecto D=deca B= base(liters,grams,meters) D=deci C=centi M=milli. my science teahcer taught it to us like this-King Henry Died By Drinking Chocolate Milk. If you want to get from mm(millimeters) to cm you move the decimal 1 place to the right. If you want to get from a big unit to a smaller unit then you have to move the decimal however many letters you are skipping. If you're going from km to dm you have to move the decimal 4 places to the left.