This is the third of four lectures we are showing from our 'Multivariable Calculus' 1st year course. In the lecture, Sarah's focus is on Volume Integrals. You can watch many other student lectures via our main Student Lectures playlist (also check out specific student lectures playlists):    • Oxford Mathematics Student Lectures -...   All first and second year lectures are followed by tutorials where students meet their tutor in pairs to go through the lecture and associated problem sheet and to talk and think more about the maths. Third and fourth year lectures are followed by classes.