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Spheres:

A.  Definitions

A sphere is a 3-dimensional figure in which the distant from the center to the edge is the same at every point.

B.  Basic Memorizations

Surface Area =

^{Volume =}

C.  Examples

Ex [1]  The surface area of a sphere of radius 3" is _____ in².

a.  The answer is .

Ex [2]  The volume of a sphere of radius 6cm is _______ cm³.

^{a.  The answer is}