1. ## Calc2...Finding the volume

This is what I have done:
1) The end points are 8 and 3.
2) then I am taking the integral of y = -x^2+11x-24 and then multiplying by 2pi.
the final comes 125pi/3..which is wrong.

Any help

thanks

2. use the method of disks ...

$\displaystyle \displaystyle V = \pi \int_a^b [r(x)]^2 \, dx$

where $\displaystyle r(x)$ is the radius of a representative disk formed by rotating the curve ... in this case, $\displaystyle r(x) = -x^2 + 11x - 24$ , $\displaystyle a = 3$ , and $\displaystyle b = 8$.

3. thanks