The circle x=acost, y=asint, 0≦t≦2pi is revolved about the line x=b, 0<a<b, thus generating a torus (doughnut). Find its surface area.
Area if the torus:_____________.© BrainMass Inc. brainmass.com February 24, 2021, 2:28 pm ad1c9bdddf
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A surface of revolution is formed by the rotation of a planar curve C about an axis in the plane of the curve and not cutting the curve. The Pappus--Guldinus theorem says that:
• The area ...
The area of the torus is found by revolutions of integrals.