Answer
There are $3.1536 \times 10^{7}$ seconds in a year.
Work Step by Step
$365days \times \frac{24 hours}{1day} \times \frac{60minutes}{1hour} \times \frac{60seconds}{1minute}$ = $31,536,000$ seconds
Expressed in scientific notation as $3.1536 \times 10^{7}$ seconds.
