Hey guys. Any help integrating this function would be much appreciated, so I can apply the shell method.

Area bound by the curves:

$\displaystyle y=\frac{e^{{-x^2}/2}}{\sqrt{2\pi}}$

$\displaystyle y=0$

$\displaystyle x=0$

$\displaystyle x=1$

I just don't know where to begin integrating that first function. Thanks!