http://www.ck12.org Chapter 11. Surface Area and Volume
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15.
Aregular tetrahedronhas four equilateral triangles as its faces. Use the diagram to answer questions 16-19.
- What is the area of the base of this regular etrahedron?
- What is the height of this figure? Be careful!
- Find the volume. Leave your answer in simplest radical form.
19.ChallengeIf the sides are lengths, what is the volume?
Aregular octahedronhas eight equilateral triangles as its faces. Use the diagram to answer questions 19-21.