Hi there folks,

Been browsing your forums and figured you were the best to maybe help me out. Been having quite a bit of trouble with the following:

A trough is 1m long and semi-circular in cross-section with a radius of 100mm. The trough is initially horizontal and is filled with water. One end of the trough is lifted such that the angle between it and the horizontal is x degrees. Find a relationship/s between the volume of water remaining in the trough and the angle x.

I know that the key to this problem is how the axes are defined. Unfortunately thats all i can figure.. Any help would be very much appreciated.

Thanks