Interactive calculator for the disk and washer methods of computing volumes of revolution
The disk method computes the volume of a solid of revolution by integrating the areas of circular cross-sections perpendicular to the axis of rotation, yielding V=π∫[f(x)]2dx. The washer method generalizes this to regions between two curves. This calculator lets you enter functions and visualize the resulting disks or washers and the solid of revolution they form.
Controls: Click and drag to orbit, scroll to zoom.