a) Find the area bounded by the curve y=x^2 and the line y=4. Determine the co-ordinates of the centroid of the area.
(I know about the centroid equations but do not know how to apply to this question. Also I think I know the area bounded equation but not to sure if you have to apply it to this question)
b) A uniform wire is bent in the form of a three quarter circle (picture below). Determine the co-ordinates of the mass centre.
(Also what kind of topic is this?)
I'm sure you guys can help.