Compute the surface area of the surface obtained by revolving the given curve about the indicated axis. 
Definitions:
Stand Rotation Time
The period of time between the establishment and harvest of a stand of trees in forestry management.
Old-growth Forest
Forests that have developed over long periods without significant disturbance, characterized by large trees, rich biodiversity, and complex ecological processes.
Ecological Niches
The roles and positions species hold in their environment, encompassing their habitat, activities, and interactions with other species.
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