id: 06133122
dt: j
an: 2013b.00837
au: Nishiyama, Yutaka
ti: Measuring areas: from polygons to land maps.
so: Int. J. Pure Appl. Math. 81, No. 1, 91-100 (2012).
py: 2012
pu: Academic Publications, Sofia
la: EN
cc: M55 G95 I55
ut: measurement of area; polygon; triangulation survey; Heron’s formula;
trapezoid formula; planimeter; Jacob Amsler; polar planimeter; linear
planimeter
ci:
li: http://www.ijpam.eu/contents/2012-81-1/9/index.html
ab: Summary: The author explains how to measure area using both simple and
complicated measurement methods. Elementary-school children obtain area
by counting triangles; junior-high-school students use Cartesian
coordinates; and high-school students study Heron’s formula. In this
article, additional methods such as the trapezoid formula and
Amsler’s linear planimeter are presented.
rv: