Strips of Equal Width on a Sphere Have Equal Surface Areas
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On a sphere, strips of equal width have equal surface areas. The sphere is generated by revolving the semicircle given by 
about the 
axis.
Contributed by: Mito Are and Daniel Relix (Collin College) (March 2011)
Open content licensed under CC BY-NC-SA
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"Strips of Equal Width on a Sphere Have Equal Surface Areas"
http://demonstrations.wolfram.com/StripsOfEqualWidthOnASphereHaveEqualSurfaceAreas/
Wolfram Demonstrations Project
Published: March 7 2011
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