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they just named it lyk dat bcz whn u revolve the region under y=5 it forms a cylinder..its the usual thing find volume under y=5 and then under curve the diff bw them is the req ansCould some explain me how to do question 9 part ii? i dont understand why do we first have find the volume of the cylinder (as given in the marksheet)?
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s10_qp_13.pdf
Marksheet: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s10_ms_13.pdf
Thanks alot!