2,4,5+Spheres

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 * __ SPHERE __ - ** //a round geometric surface whose points are equal distance from its center//

–noun //(Dictionary.com)//
 * 1. || Geometry . ||   || a solid geometric figure generated by the revolution of a semicircle about its diameter; a round body whose surface is at all points equidistant from the center. ||   ||

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A sphere is very useful. It can be used in alot of everyday stuff like sports. Basketball, baseball, and soccer wouldn't be so great without them. Here is a link to a game that has to do with spheres. [] sorry, I know that it isn't educational, but it does involve spheres, and it's a fun way to become acquainted with them.======

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= __//**Calculating the...**//__ =

=__//**Volume of Sphere**//__= The distance from the centre to the surface is the **radius**.
 * Volume of sphere** = [[image:http://www.onlinemathlearning.com/image-files/volumesphere.gif width="39" height="41" align="absmiddle"]] where //r// is the radius.

A **hemisphere** is half a sphere, with one flat circular face and one bowl-shaped face.
 * Volume of hemisphere** [[image:http://www.onlinemathlearning.com/image-files/volumehemosphere.gif width="132" height="45" align="absmiddle"]] where //r// is the radius

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=//__**Surface Area of Sphere**__//= A **sphere** is a solid in which all the points on the round surface are equidistant from a **fixed point**, known as the centre of the sphere. The distance from the centre to the surface is the **radius**. Surface area of a sphere with radius //r// =

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=__//**Circumference of a Sphere**//__= Circumference = 2 π r

No video, but this is an easy function to remember.

//--- This wiki was created by Griffin H., Luke L. , Jane L. , and Will L.//