19.08 rounds to nearest tenth

19.08
the 0 is in the tenths place
the 8 is in the hundredths place
when rounding to the tenths place, you look to the number in the hundredths place- if that number is 5 or higher, you round the number in the tenths place up one; if that number is 4 or lower, you round down

19.08 because the 8 is over 5, you round the 0 up one
so the answer is
19.1

Considering that zero is in the tenth place, the answer would be 19