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http://emptypulchritude.deviantart.com/art/Water-Glass-322320544http://www.getty.edu/art/collection/objects/12862/unknown-maker-hemispherical-cup-near-eastern-parthian-1st-century-bc/https://en.wikipedia.org/wiki/File:Lego-Bento-Lunch-Box.jpghttp://spmath87311.blogspot.com/2012/03/marielles-surface-area-post.htmlhttp://math.stackexchange.com/questions/163070/the-most-efficient-way-to-tile-a-rectangle-with-squareshttps://commons.wikimedia.org/wiki/Category:Animations_of_geometry

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