What is the area of an equilateral triangle of side length 20 cm?
1 Answer
Nov 26, 2015
Explanation:
Referring to this image,
http://areeweb.polito.it/didattica/polymath/htmlS/argoment/ParoleMate/Gen_08/Img/TriangoloEquilatero%20(11)png
we know that
This means that the height cuts
This means that, for example,
Since we know the base and the height, then the area is