I need to find the volume of a solid.

between the curve y = sec^(-1)(x) and the x-axis from x=1 and x=2 revolved around the y-axis.

using both the slicing method and cylindrical shell method.

sec^(-1) is sec inverse.

volumes of normal shapes i can find, but i think the sec is throwing me off.

any help along the right path would be appreciated.

thanks