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Geometry

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The lateral area of a regular pyramid is 300 square units. The perimeter of its base is 100 units. Find the slant height of the pyramid.

my answer is 5 units is this correct?

  • Geometry -

    Not quite!

    The lateral area of a pyramid, A
    =(1/2)(base-perimeter)* slant height

    So given A=300, base perimeter =100
    we have
    slant height = A*2/base-perimeter=6 units

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