8.G.3.d Determine the volume of cones, cylinders, and spheres, and solve authentic problems using volumes.
Reciprocal
The multiplicative inverse of a number. A number and its reciprocal have a product of 1. For example, the reciprocal of 23\frac{2}{3} is 32\frac{3}{2} because 23×32=1\frac{2}{3}\times\frac{3}{2}=1.
Cone
A three-dimensional figure with a circular base and one vertex.
Cylinder
A three-dimensional figure with two congruent, parallel circular bases connected by a curved surface.
Sphere
A three-dimensional figure in which every point on the surface is the same distance from the center.
Composite Figure
A figure that is made up of two or more simpler geometric figures.