Volume of revolution by the region bounded by the parabolas $y^2=x, y^2=8x, x^2=y, x^2=8y$ about the $x$ axis is $\frac{279\pi}{2}$.
Volume generated by revolving the region in the first quadrant bounded by the parabolas $y^2=x$, $y^2=8x$, $x^2=y$, $x^2=8y$ about the $x$-axis.