Question

How many seconds are there in a year?

Answer 1

There are 31,536,000 seconds in a year.

Explanation:

This is just a series of conversion factors.

1 year `=(365 " days")/(1 " year")xx(24 " hrs")/(1 " day")xx(60 " min")/(1 " hr")xx(60 " sec")/(1 " min")`

You can see the all terms cancel except seconds (numerator) and year (denominator).

Plugging into a calculator, `365xx24xx60xx60=31,536,000`

So the answer is that there are 31,536,000 seconds in a year.