Talk:Surface area

message: Is it really correct that two dimensional structures such as triangles have "surface area" ? I do not think so, "surface area" is a three dimensional concept. Ar
: I've moved the table of areas of plane figures to the talk page of "Area". Arcfrk (talk) 08:48, 11 March 2008 (UTC)
thread_title: Two dimensions

message: There is a problem with the last section.  It states that if you increase the radius the ratio decreases.  However, if you change the units of measure, the ratio can increase with a larger radius.  A radius of 100 meters has a SA:V ratio of .03, but a radius of 1 kilometer has a ratio of 3.  Also, it should be clear that this is assuming cells have a spherical shape.  —Preceding unsigned comment added by 70.188.231.137 (talk) 04:05, 30 March 2008 (UTC)
replies: text:  SA:V is measured in inverse distance units.  It is not dimensionless.  A sphere with a radius of 100 meters has a ratio of 0.03/meter while the sphere with a radius of 1 kilometer has a ratio of 3/kilometer = 3/(1000 meters) = 0.003/meter.  Measuring in the same units, the sphere ten times larger has a ten times smaller ratio, as it should.  This similarity law holds for any shape, not just spheres.  In the case of cells the only assumption is that a big cell is the same shape as a little one.  This is more or less true of cells.  It is definitely not true of multicellular structures, which is why one can easily distinguish a mouse bone from an elephant bone even when the mouse bone is magnified to elephantine size. -Dmh (talk) 05:32, 23
And I am SMART  —Preceding unsigned comment added by 66.112.37.98 (talk) 22:33, 2 March 2011 (UTC)
thread_title:  Surface Area To Volume Ratios 

message: I came here to verify a formula, but I ended up stumbling upon a page a 4th grader could have written. What in the world happened to this article?
S lijin (talk) 01:54, 19 May 2009 (UTC)
replies: text: I came here to verify a formula, but I ended up stumbling upon a page a professor could have written. What in the world happened to this article? i can not understand any of this, perhaps someone could submit something eaiser to understand Summer911 (talk) 05:32, 10 March 2010 (UTC)
thread_title:  What. The. Hell. 

message: http://web.archive.org/web/20120427201949/http://www.math.usma.edu/people/rickey/hm/CalcNotes/schwarz-paradox.pdf  — Preceding unsigned comment added by 94.197.120.122 (talk) 22:10, 9 October 2013 (UTC)
thread_title:  References recovered partially 

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thread_title:  External links modified 

message: The article mentions a characterization of surface area using a few properties such as additivity and invariance under Euclidean motions. There should be given a source for this, and preferably it should also be explained more clearly. MathHisSci (talk) 21:52, 14 April 2023 (UTC)
thread_title:  Characterization