Math Warehouse
Math Warehouse: Formula Volume of a Cone
Use the formula to find the volume of a cone.
Math Open Reference
Math Open Reference: Volume
Learn about volume with this helpful reference tool. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.
National Council of Teachers of Mathematics
The Math Forum: Volume and Surface Area of a Cone Frustum
This question and answer site deals with the derivation of the formula for the surface area for the frustum of a right circular cone.
Wolfram Research
Wolfram Math World: Frustum
Math World site offers the definition of frustum and links to view a frustum of a pyramid, cone, and sphere.
Wolfram Research
Wolfram Mathworld: General Solid Geometry
This page has links to general solid geometry topics, including depth, height, width, and length. A good introductory site into geometry.