By rotating the line y = r about the x-axis, for x in the interval [0, h],

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By rotating the line y = r about the x-axis, for x in the interval [0, h], and applying the surface area formula, obtain the well-known fact that the surface area of a cylinder of radius r and length h is given by 2πrh.

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Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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