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Calculator Soup
Calculator Soup: Rectangular Prism Calculator
This site provides an online rectangular prism calculator. Using any three of the six attributes (length, width, height, surface area, volume or diagonal), students can calculate the other three attributes. The calculator allows students...
Math Words
Math Words: Frustum of a Cone or Pyramid
This site defines a frustum and has links to related topics. The site offers the formula for the lateral area, volume, and total surface area of frustum of a cone.
Wolfram Research
Wolfram Math World: Hemisphere
MathWorld gives a simple and complex definition of a hemisphere. The formula for the volume of a hemisphere is also given.
abcteach
Abcteach: Math Posters
[Free Registration/Login Required] Most of the posters on this site are colorful math posters for primary or elementary school. However, there is one math poster that could be used in secondary school geometry class that has the formulas...
Curated OER
Math2.org: Areas, Volumes, Surface Areas
This personal site from Math2.org gives formulas for the area, volumes and surface areas of various shapes. Also provides diagrams.
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.
Math Words
Math Words: Right Cone
Math Words defines a cone with a picture and formulas for volume given the hieght and base area of the cone.
Math Is Fun
Math Is Fun: Sphere
Students learn about a sphere. The resource consists of facts, formulas, images, and definitions. An animation demonstrates how the sphere can contain the greatest volume for a fixed surface area.