- Mar 26, 2013
guys i have a question. for the 4 mark volumes, i never like to 'unroll' the shell into a rectangular prism. instead i like to derive the result from fresh using subtraction of the inner and outer radii. when applying this method today, i forgot the height of the shell, and as a result there was no e^x present in my integral AT ALL. how many marks will i lose for it? it's an absolutely terrible mistake, i know...