Re: HSC 2013 4U Marathon
Hi, I have a problem with a question, its question 1996 3a the volume, here's the link:
http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2000exams/hsc00_maths/96MAT4U.PDF
I have no idea why the outer radius of the annulus is 4-x rather than 4+x