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This article needs to take a similar format to other Order of Magnitude pages - see column headings Ian Cairns 00:18, 4 Dec 2004 (UTC)
For anyone looking for the discussion on the merge, it's at Talk:Orders of magnitude (length) and Talk:Orders of magnitude (volume). —One-dimensional Tangent (Talk) 22:18, 25 March 2006 (UTC)[reply]
10^12 "1 square megametre (Mm^2)= 1 million m^2" is a spelling mistake and should state 1 million km^2 —Preceding unsigned comment added by 62.206.147.254 (talk) 10:02, 6 August 2010 (UTC)[reply]
Consider adding 1 fb^-1 = 10^(-43) m^2 - the femtobarn is often used as a unit of area in particle physics, to the extent where it has its own section in the article on the barn as a unit[1]. Henryeshbaugh (talk) 23:14, 29 August 2015 (UTC)[reply]
References
I've been working for about two hours on this, PLEASE DO NOT REVERT. The page has proper metrication now down to the mm. I have also used only major prefixes, mm, m km etc squared. dm are cm are deprecated for proper scaling here, but they are included. Note how the table is much clearer this way. Again, please do not revert without using the talk page. --Cpt ricard (talk) 05:52, 24 March 2015 (UTC)[reply]
Using metric system is the way to go. However, I would suggest to use M(m²) instead of km² etc. Reason for this is that it is much harder for the brain to process a squared prefix. If you think it is too futuristic, I would suggest we for the moment keep both systems. --Warpi 2021-07-21
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980000 KM² INC SPANISH GUYANA — Preceding unsigned comment added by 79.93.247.123 (talk) 23:36, 8 May 2017 (UTC)[reply]
The conversion for the area of the observable universe is incorrect. 2.7E53 is not 2700 Yottametres — Preceding unsigned comment added by Dickpenn (talk • contribs) 12:52, 31 August 2019 (UTC)[reply]
