Approximating Arc length or Surface Area in Exercises 65-68, write the definite integral for finding the indicated arc length or surface area. Then use the integration capabilities of a graphing utility to approximate the arc length or surface area. (you will learn how to evaluate this type of integral in section 8.8)
Using a Loop Consider the graph of . shown in the figure. Find the area of the surface formed when the loop of this gra[ph is revolved about the x-axis.
