10 millimetres = 1 centimetre so 300 mm = 30 cm.
3.4 centimeters = 34 millimeters
Not a lot. You haven't given the units for those numbers - centimeters, millimeters, inches, etc.
No, it is not - millimeters make up centimeters and centimeters make up meters
1 centimeter=10 millimeters
If you have three measurements of length (meters, centimeters, millimeters) and you multiply them together, you will end up with a measure of volume (liters). Of course, if you were to actually do this, you would want to convert all of the lengths into a common unit (convert centimeters and millimeters to meters or convert meters and centimeters to millimeters).
No, millimeters are much smaller. 10 millimeters make up 1 cm
680 mm
3cm.
1 inch = 25.4 millimeters 3 inches = 76.2 millimeters
300 centemeters equal up to 3 meters
none a metre is made up of 100 centimeters or 1000 millimeters
The answer is in the question, as they often are. the first and most important thing and engineer or technicial (or anyone living in the modern world) is learn the prefixes for the metric system. The basic ones are very simple. c (cent) = x100 k (kilo) = x1000 M (Meg) = x1000000 G (Gig) = x1000000000 m (milli) = /1000 u (micro) = /1000000 n (nano) = /1000000000 Now look at your question. You have millimeters (mm) and centimeters (cm). Guess what the relationship between them is? Hint, look a few lines up in this answer.