Geometry 12.6 Surface Area and Volume of Spheres
Sphere - is the locus of points in space that are a given distance from a point.
Chord of a sphere - is a segment whose endpoints are on the Sphere.
Diameter of a sphere - is a chord that contains the center.
Radius of a sphere - is a segment that goes from the center of the sphere to an endpoint on the sphere. It is 1/2 the diameter in measure.
Surface Area of a sphere = 4 (pi) r2
Volume of a sphere - (4/3) (pi) r3
Great Circle of a sphere - if a plane intersects a sphere, the intersection is either a single point or a circle.
If the plane contains the center of the sphere, then the intersection is a Great Circle of the Sphere.
Every great circle of a sphere separates a sphere into 2 congruent halves called hemispheres
Homework: worksheet 12.6 B