Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §8.1 Areas and Volumes by Slices, #43 · Calculus · Applications of integrals

The rectangle with sides … is rotated around the … axis

The slices are washers. Find the slice area and volume.

The rectangle with sides $x = 1, x = 3, y = 2, y = 5$ is rotated around the $x$ axis.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §8.1 Areas and Volumes by Slices, #43

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