### Home > APCALC > Chapter 8 > Lesson 8.3.1 > Problem 8-102

8-102.

The graph at right shows

The

-axis.Vertical rectangles.

The

-axis.Horizontal rectangles would be very difficult (because the inverse of

is NOT a function). Use the Shell Method.The line

.Recall that each cylindrical shell is a prism with dimensions:

. represents the (radius) in the circumference part of the formula:. (Why?)By shells:

The line

. Vertical rectangles with a hole in the center.