Question

Challenge for smart people in maths

Q. How many seconds are there in a year? Express it in standard notation

Answer 1

How many seconds in a year ????????????????

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Seconds in a minute

1 minute has 60 s

Seconds in a day

A day has 24 hours

1 hour has 60 s × 60 s

              = 3600 s

              = 3.6 × 10³ s

So : 1 day has : 3.6 × 10³ s × 24 [ for 24 hours ]

                      = 86.4 × 10³ s

Seconds in a YEAR

A year ( non - leap ) has 365 days

So : a year has : 365 × 86.4 × 10³ s

                       =  31536 × 10³ s

                       = 3.1536 × 10³ ×10⁴ s

                       = 3.1536 × 10³⁺⁴ s

                       = 3.1536 × 10⁷ s

$\underline{\underline{\huge{\textsf{ANSWER}}}}$

The number of seconds in a year is 3.1536 × 10⁷ s

Hope it helps :-)

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Answer 2

hey bro here is ur answer
$60 \times 60 \times 24 \times 365 = 31536000 \: s$