Stacy Heath

2023-02-18

15 years is how many seconds?

Lexi Marks

Number of days in a year are 365
Number of hours in a day is 24
So the number of hours in a years is $24×365\phantom{\rule{1ex}{0ex}}\text{}\phantom{\rule{1ex}{0ex}}\frac{\text{hours}}{\text{year}}$
Number of minutes in an hour is 60
So the number of minutes in a year is $60×24×356\phantom{\rule{1ex}{0ex}}\text{}\phantom{\rule{1ex}{0ex}}\frac{\text{minutes}}{\text{year}}$
The number of seconds in a minute is 60
Thus the number of seconds in a year is:
$60×60×24×356\phantom{\rule{1ex}{0ex}}\text{}\phantom{\rule{1ex}{0ex}}\frac{\text{seconds}}{\text{year}}$
$31536000$
$\to 3.1536×{10}^{7}$

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