1.) Set up the integral to find length of curve given $\displaystyle y = \sqrt{x}, x =0, x=4$

2.) Set up the integral to find volume if $\displaystyle \int_{0}^{4} \sqrt{x}\, dx$ is rotated around the x-axis.

2.) Set up the integral to find volume if $\displaystyle \int_{0}^{4} \sqrt{x}\, dx$ is rotated around the y-axis.