Question

How many seconds are there in \[7\] hours?

Answer 1

Hint: Since we know the number of seconds in each minute then first of all calculate the number of seconds in \[1\] hour then using the unitary method just multiply it with the number of hours that we want to convert into seconds.

Complete step by step solution:
Since we know that there are \[60\] minutes in each minute
Then we can calculate the number of seconds in \[1\] hour or \[60\] minutes
\[\because 1\text{ minute = 60 seconds}\]
\[\therefore \text{ 1 hour = 60 minutes = 60}\times \text{60 seconds}\]
\[\Rightarrow 3600\]
Thus, the number of seconds in \[1\] hour are\[3600\]
Now to calculate the number of seconds in \[x\]hours
Using the unitary method that is first calculate for the unit hour then multiply it with the number of hours that we want to convert into seconds
Here we have calculated the number of seconds in \[1\] hour
Also, the total hours that we want to convert are \[x=7\]
So,
\[\Rightarrow \text{7 hours = 7}\times \text{3600 seconds}\]
\[\Rightarrow 25,200\text{ seconds}\]

Hence there are \[25,200\text{ seconds}\] in \[7\] hours.

Note:
In this conversion question just use the unitary method that is first calculated or converted for the unit value and then multiply it with the value that we want to convert into another unit. Just as here we first calculated the number of seconds in \[1\] minute then \[1\] hour then multiplied it with \[7\].