In math, the area is considered to be the total measurement of the interior of a figure. Area can only be considered within a closed figure or else that would imply an infinite area
http://www.ask.com/webanswers/Science/Mathematics...

A critical component of the threehour ASVAB is the Armed Forces Qualification Test portion of the exam. Scores from this section are used to ascertain a candidate's military suitability
http://www.ehow.com/info_7909229_areasmathcovere...

The trivial and unambiguous correct answer is obviously arithmetic, as others have mentioned. K12 math teaching progresses in roughly the correct order of importance. It is college
http://www.quora.com/Mathematics/Whatsthemostus...

well. it could be the area of a circle and many other things (well shapes)
http://wiki.answers.com/Q/What_is_the_area_of_some...
