Let and be nonnegative and continuous functions on the closed interval , then the solid of revolution obtained by rotating the curves and about the -axis from to and taking the region enclosed between them has volume given by
Method of Washers
See also
Method of Disks, Method of Shells, Solid of Revolution, VolumeExplore with Wolfram|Alpha
References
Anton, H. "Volumes by Cylindrical Shells." §6.3 in Calculus with Analytic Geometry, 2nd ed. New York: Wiley, pp. 367-373, 1984.Cite this as:
Weisstein, Eric W. "Method of Washers." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/MethodofWashers.html