Huh? why? What do you think i did wrong? i found the volume about the y axis. so V= (pi) integral of (x^2) dy. But y=x^2 sooo...
Therefore, integral of (y)dy from 0 to h. Therefore, = (pi)(Y^2)/2.. now i subbed in limits: (pi)(h^2)/2.. where did the 'c' come from?