Question

find the number of seconds in an hour a day, a week, a month and a year. express your answer in scientific notation?​

Answer 1

1min.=60s

So, 1hr=60×60s=3600s=3.6×10^3 s

1day=24 hrs.=24×3600s=86400s

=8.64×10^4s

1week=7days=7×86400 s=604800 s

=6.048×10^5 s

Now, assuming that the month has 30 days, we have,

1 month=604800×30 s=18144000 s

=1.8144×10^7 s

1 year=12months=18144000×12 s

=217728000 s=2.17728×10^8 s

We know that a month has 28 days and some have 31 days and 30 days but to solve this question we will have to assume that all months have 30 days else the question will become very complex.

Please mark as brainliest.