The volume $of$ the solid obtained $by$ rotating the region enclosed $by$

$y=e^{5x}+2,y=0,x=0,x=0\mathrm{.}9$

about the $x-$axis can $be$ computed using the method $of$ disks $or$ washers via $an$ integral

$V={\displaystyle \underset{a}{\overset{b}{}}}$

with $limitsof$ integration $a=$

and $b=$

$.$