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How many hours are there in one year?

Answer
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Hint: In the above given question, we are given an amount of time of one year. We have to determine how much amount of time it becomes when we measure the given time in the units of hours. These two units, namely the year and hours respectively, are both the units of time. Both these units of time are used at different places according to their usage and convenience.

Complete answer:
We are given an amount of time that is \[1\] year.
We have to determine the above-given amount of time in the units of hours.
In order to approach the solution, first we have to use the method of unit conversion from the units of years to days and then days to hours respectively.
Now, we know that \[1\] year has \[365\] days and \[1\] day has \[24\] hours.
Hence, mathematically we can write it as,
\[ \Rightarrow 1y = 365d\]
and then since \[1d = 24h\] , hence we can write the above equation as,
\[ \Rightarrow 1y = \left( {365 \times 24} \right)h\]
Therefore, by evaluating we get the above equation as
\[ \Rightarrow 1y = 8760h\]
That is the required relation between the two units of time which are years and hours.
Therefore, there are \[8760\] hours in one year.

Note:
However, the two measurement units, year and hours are both the two different measuring units for time, but the standard unit for the measurement of time i.e. the S.I. unit of time is seconds denoted by the symbol \[s\] . The duration of one second of time is equal to the sixtieth part of a minute, whereas a minute is equal to the sixtieth part of an hour.
Mathematically, we can write it as
\[ \Rightarrow 1s = \dfrac{1}{{60}}\min \]
and,
\[ \Rightarrow 1\min = \dfrac{1}{{60}}h\]
Therefore, combined these equations we have
\[ \Rightarrow 1s = \dfrac{1}{{60 \times 60}}h\]
Or,
\[ \Rightarrow 1s = \dfrac{1}{{3600}}h\]