Volumes of torus (1 Viewer)

[akhilN3]

Hey guys. I have a question regarding volumes of torus. I have been struggling to do these types of questions in exams but I noticed Pappu's centroid Theorem. I'm not sure if u guys have heard of this method but it is a simple formula. [FONT=lucida grande, tahoma, verdana, arial, sans-serif][/FONT]http://en.wikipedia.org/wiki/Pappus's_centroid_theorem


I was just wondering if we are allowed to use this method in exams because it works and is simpler but it is not a method that is taught.

 

[asianese]

You will be given 0 marks if you use this.

 

[Carrotsticks]

You can use it to verify your solution, but not as the actual working out.