Is 0.1 and 0.10 the same?

If you mean as exact numbers, yes. But when you deal with measurements in the real world, nothing is exact, and all measurements are approximate. If a measurement is given as 0.1, it usually means that it is accurate to one decimal place, which means it could be anywhere from 0.05 to 0.15. If it is given as 0.10, it means that it is accurate to two places, so it is between 0.095 and 0.105.