math

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the base edge of a triangular pyramid is 3 meters and its altitude is 10 meters. find the area of a section parallel to the base and 6 meters from it.

  • math -

    4 m below the apex, the area of a section is (4/10)^2 * (base area)

    Assuming the base is an equilateral triangle, the base area is
    (4.5/2)*sqrt3 = 3.897 m^2

    Thus A = 0.6235 m^2

  • math -

    hmmm. what does the base edge means?

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