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Activity: Volume of a Cone: A Proof Without Words
Go to: http://www.mph.net/coelsner/jsp_applets/cone_ex.htm (opens a new window)
Description: Supply a justification for each step in this proof of the volume formula for a cone.
Technology Type: Computer 
Author: Charles E. Oelsner
Language: English 
Cost: Does not require payment for use

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Activity: Volume of a Cone Exercise
Support Material: Volume of a Cone Applet
Tools: Cone
Cone
Courses: Calculus Solids with known X-sections

  tpowers
Comment:A correct derivation of the volume of a cone, but the diagram is really too complex. First of all, it is vertical, when students are used to seeing the x-axis as horizontal. I can't even begin to guess why this is.