Nineteen.
Nineteen thousand.
Nineteen hundredths.
You could write it as 38/10 or 19/5 cm.You could write it as 38/10 or 19/5 cm.You could write it as 38/10 or 19/5 cm.You could write it as 38/10 or 19/5 cm.
nineteen hundredths
19 = 19.0
nineteen billion six hundred million eight hundred thousand four
19% = 0.19
190%
Under today's rules 19 in Roman numerals are considered to be XIX but the Romans themselves would have probably calculated 19 as XVIIII and then simplified it to IXX (-1+20=19) in fact the Latin word for 19 literally means one from twenty.
19 hundredths written as a percentage is 19%
19 = 1.9 × 101
19% 19/100