Find the mass of the solid bounded below by the circular paraboloid z$=$x$2+$y$2$z$=$x$2+$y$2$ and above by the circular paraboloid z$=7\mathrm{.}25$x$2$y$2$z$=7\mathrm{.}25-$x$2-$y$2$ if the density $($x$,$y$,$z$)=$x$2+$y$2$$($x$,$y$,$z$)=$x$2+$y$2.$

Write your answer in terms of $.$ Notice a factor is already included in the answer.