Question in centroid for given figure

[flower-girl]

hi all ..

Hello .. I am a new member .. I have a test next week .. I have some difficulty in such matters ..

[PLAIN]http://store2.up-00.com/Nov11/Eac12548.jpg

[PLAIN]http://store2.up-00.com/Nov11/UKV12548.jpg

thanks

 

[Redbelly98]

Welcome to Physics Forums.

For the y-coordinate of a triangle's centroid, it is not half of the height but rather is located closer to the base. In fact it is 1/3 of the height above the base:

(From http://en.wikipedia.org/wiki/Centroid)

 

[flower-girl]

I did not understand .. Explain with example if possible