Describe the altitude of deep water and discuss the challenges in advance is associated with deep water exploration

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Don't know how to find x given these segment lengths

Aline that intersects one of two parallel lines intersects the other also always sometimes never