whoa, i guess i was wrong, but i cant complete understand it. and why is there no pi in the answer> can anyone help me out to explain this better, i think the guy who solved it in the other thread, used some stuff i dont even know: like -sqrt(r2 - a2) < y < sqrt(r2 ? a2)
I dont know what sqrt is, can anyone still help me out with this problem using integrals speciallfically probably the intergrals of volumes generated by revolging lines around axises