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How long is a hour?

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How long is a hour? An hour is most commonly defined as a period of time equal to 60 minutes, where a minute is equal to 60 seconds, and a second has a rigorous scientific definition. There are also 24 hours in a day.

Is it half an hour or half-hour? “half-hour” is commonly written with a dash (hyphen) and is a distinct word in the dictionary. So, “a half-hour” = 30 minutes = “half an hour”. Save this answer.

Can you say two hours and a half? no, we’d say One hour and a half because it can be the half of one hour but not the half of two hours,which would be 3 hours then. Two and a half hours …is correct.

What is half a 16th? Here’s a little bonus calculation for you to easily work out the decimal format of half 1/16. All you need to do is divide the numerator by the denominator and you can convert any fraction to decimal: 1 32 = 0.0313.

How long is a hour? – Related Questions

 

Why is an hour 60 minutes?

Who decided on these time divisions? THE DIVISION of the hour into 60 minutes and of the minute into 60 seconds comes from the Babylonians who used a sexagesimal (counting in 60s) system for mathematics and astronomy. They derived their number system from the Sumerians who were using it as early as 3500 BC.

How do you say hour?

Why is it called an hour?

Hour is a development of the Anglo-Norman houre and Middle English ure, first attested in the 13th century. It displaced tide tīd, “time” and stound stund, span of time. The Anglo-Norman term was a borrowing of Old French ure, a variant of ore, which derived from Latin hōra and Greek hṓrā (ὥρα).

How much time is 0.50 hours?

0.50 hours is 0 hours, 30 minutes and 0 seconds. 0.50 hours is also equivalent to 30 minutes and 0 seconds or 1800 seconds.

How do you spell .5 hour?

Senior Member. The plural (hours) is used unless the phrase is used as an adjective (e.g. a 0.5 hour presentation, which in practice would be said as “a half-hour presentation” or “a thirty-minute presentation”). Pronunciation: zero point five or nought point five (point five seems to be AE).

What is .05 of an hour?

0.05 hours is 0 hours, 3 minutes and 0 seconds. 0.05 hours is also equivalent to 3 minutes and 0 seconds or 180 seconds.

How do you use half an hour in a sentence?

I came back in half an hour, and she had died. I’ll be back in half an hour to collect your feedback. When I finally spoke to somebody they said that an engineer would call me back within half an hour.

Whats the quarter of an hour?

1 : fifteen minutes. 2 : any of the quarter points of an hour. 3 : a unit of academic credit representing an hour of class (such as lecture class) or three hours of laboratory work each week for an academic quarter.

Why do we say an hour instead of a hour?

‘An hour’ is correct. We say ‘an hour’ because ‘hour’ is pronounced with a vowel sound in the beginning and the ‘h’ is silent.

Is it 1.5 hour or 1.5 hours?

If it is just one, it is singular. “1 hour” = “one hour”. Everything else is plural. “1.5 hours” = “one point five hours”; “0.5 hours” = “zero point five hours”; “0 hours” = “zero hours”.

How do you write one and a half hours?

Is it “one and a half hour” or “one and a half hours” ? It is “one and a half hours” because you have more than one hour ( one hour plus half an hour ) hence implying that it is plural and not just a single hour. both “one” and “a half” are describing the noun “hour”, so two.

What is the decimal for half an hour?

Using our 7:30 example above, we intuitively know that 30 minutes is ‘half an hour. ‘ In decimal format one-half is expressed as ‘. 5’. So in decimal format this is expressed as 7.5 hours (7 and a half hours).

What does 2.5 mean in hours?

2.50 hours is 2 hours, 30 minutes and 0 seconds. 2.50 hours is also equivalent to 150 minutes and 0 seconds or 9000 seconds.

Is it correct to say an hour or a hour?

Should You Use ‘A’ or ‘An’? So to answer Matt’s question, “an hour” is correct, because “hour” starts with a vowel sound. People seem to ask most often about words that start with the letters H and U because sometimes these words start with vowel sounds and sometimes they start with consonant sounds.

How do you write one half hour?

It is “one and a half hours” because it means (one hour) + (half an hour) equals = “one and a half hours” (which means more than one hour). As you know, anything counted more than one is already considered PLURAL, so there’s no need to get confused about that.

Why do people say half an hour?

“half an hour” is an abbreviation for “half [of] an hour”. The phrase “half of” is quite common: “half of the people in the auditorium”, “half of the cake”, etc. In fact, “half of” is so common your brain may automatically insert “of” after “half”. So then “of” is elided.

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Matthew Johnson
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