The answer is 38.05 years
To solve this question, we should convert the given seconds to the year.
So,
Number of seconds in a year = [tex]3.154 * 10^7[/tex]
Seconds the man lived = [tex]11.2 * 10^9[/tex].2 * 10^9
How many years, he lived = ?
Here a unit method will be applied as
Total years the man lived= [tex]1.2 * 10^9/3.154 * 10^7[/tex]
Total years the man lived = 38.05 years