What decimal of an hour is a second?
2023
What decimal of an hour is a second?
- A.
0.00024
- B.
0.00037
- C.
0.00034
- D.
0.00027
Attempted by 137 students.
Show answer & explanation
Correct answer: D
Explanation: how to find the decimal of an hour that equals one second.
There are 60 seconds in a minute and 60 minutes in an hour, so 1 hour = 60 × 60 = 3600 seconds.
One second is therefore 1/3600 of an hour.
Convert the fraction to a decimal: 1 ÷ 3600 = 0.000277777...
Rounded to common decimal places this is about 0.00028; among the given choices, 0.00027 is the closest value, so it is the correct answer.