Question 329293
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Don't know, can't tell.  You need to provide some additional information.  The only requirement that must be met for a pyramid to be a square pyramid is that the base be square.  Pyramids do not have "sides."  They have faces, edges, and vertices.  So I don't know which measurement is 9 meters.  Is it the side of the square base?  Is it one of the triangle face edges?  Is it both, i.e. is it a Johnson Square Pyramid?  Is the apex on a normal through the center of the base?  You have to tell the whole story, this is Algebra.com, not the Psychic Hot Line.  


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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