# What is the area of an equilateral triangle of side length 20 cm?

##### 1 Answer

Nov 26, 2015

#### Answer:

#### 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