Answer : The number of seconds in a tropical year is 47335388.99 seconds.
Explanation :
First we have to calculate the time for 1 year.
As we know that, 1 day has 86400 seconds.
So, 365.242199 days has

First we have to calculate the time for half year.
The time for half a year =

Thus, the time required will be:
The required time =

Therefore, the number of seconds in a tropical year is 47335388.99 seconds.