Question

how many seconds in one year

Answer 1

number of seconds in one day=86,400
number of days in one year=365
so seconds in one year= 365×86400
=3153600

thus there are 3,1,53,600 seconds in an year

Answer 2

Hello,
we have that:
1 year is equal to 365 days;
1 day= 24 hours;
1 hours= 60 minutes;
1 minutes= 60 seconds;
then:
numbers of the second in 1 hours:
n=60×60=3600 s;
number of the second in 1 day:
n=24×3600=86400;
number of the second in 1 year:
n=86400×365=3153600 s

bye :-)