🌐EnglishEnglishDeutschEspañolFrançaisItalianoPortuguêsTiếng ViệtРусский中文日本語EntityQ12137· pop 11· linked from 13 articlesspherical shellRegion between two concentric spheres of differing radiiAvailable in 11 languagesEspañolDeutschРусскийPortuguêsItalianoBasqueCatalanEsperantoTiếng ViệtUkrainianvia Wikidata sitelinks · CC0ConnectionsgeometryEntityInternational Standard Book NumberEntityCategoriesElementary geometryEuclidean solid geometryGeometric shapesSpherical geometry