30:T4bb,

Sphere

A three dimensional solid consisting of all points equidistant from a given point. This point is the center of the sphere. Note: All cross-sections of a sphere are circles.

Sphere diagram with radius r labeled, Volume = (4/3)πr³, Surface Area = 4πr²

2e:["$","main",null,{"children":["$","article",null,{"className":"SiteLayout-module__16F2PG__card","id":"mw-main","children":[["$","div",null,{"className":"SiteLayout-module__16F2PG__cardHead","children":["$","h1",null,{"className":"SiteLayout-module__16F2PG__cardTitle","children":"Sphere"}]}],["$","div",null,{"className":"SiteLayout-module__16F2PG__content","children":[false,[["$","script","0",{"type":"application/ld+json","dangerouslySetInnerHTML":{"__html":"{\"@context\":\"https://schema.org\",\"@type\":\"DefinedTerm\",\"name\":\"Sphere\",\"description\":\"A sphere is a 3D solid where all points are equidistant from the center. Explore cross-sections, volume, surface area, and related shapes.\",\"url\":\"https://www.mathwords.com/s/sphere.htm\",\"inDefinedTermSet\":{\"@type\":\"DefinedTermSet\",\"name\":\"Mathwords\",\"url\":\"https://www.mathwords.com/\"}}"}}]],[["$","div",null,{"className":"LegacyContent-module__gmcoNq__content ","dangerouslySetInnerHTML":{"__html":"$30"}}],false,false]]}]]}]}] 2f:["$","footer",null,{"className":"SiteFooter-module__C4mfIa__footer","children":["$","div",null,{"className":"SiteFooter-module__C4mfIa__inner","children":[["$","p",null,{"className":"SiteFooter-module__C4mfIa__title","children":"Mathwords: Terms and Formulas from Algebra I to Calculus"}],["$","p",null,{"className":"SiteFooter-module__C4mfIa__credit","children":["Written, illustrated by Bruce Simmons, and maintained by"," ",["$","a",null,{"href":"https://www.cazoommaths.com","target":"_blank","rel":"noopener noreferrer","children":"Cazoom Maths"}]]}],["$","p",null,{"className":"SiteFooter-module__C4mfIa__copyright","children":["Copyright © 2026 by"," ",["$","a",null,{"href":"https://www.cazoommaths.com","target":"_blank","rel":"noopener noreferrer","children":"Cazoom Maths"}],". All rights reserved."]}]]}]}]