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Math Help - Finding height of a pyramid

  1. #1
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    Finding height of a pyramid

    How. Do I find the height of a pyramid when I know the length of an edge (4 m) and the edge of the square base (5.66)? Hope someone can help.
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  2. #2
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    Re: Finding height of a pyramid

    The base is a square with edges of length 5.66. Using the Pythagorean theorem, a diagonal has length 5.66\sqrt{2}. The distance from one corner of the square base to the center is half of that 2.83\sqrt{2}. The "height", h, is one leg of a right triangle having hypotenuse 4 and one leg of length 2.83\sqrt{2}. Use the Pythagorean theorem again to find h.
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