Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
How many centimeters are in a inch?
##"1 in"## ##=## ##"2.54 cm"##
As shown here, as well as in many other sources.
Note that unlike many other which are approximations, the ##"1 in"## ##=## ##"2.54 cm"## is exact.