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Math - please help

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The Great Pyramid of Giza is 280 feet tall and about 440 feet wide at the base. The distance from the apex to the center of one side of the base is 356.1 ft. What is the area of one side of the pyramid?

61,600 ft.2

99,708 ft.2

156,684 ft.2

78,342 ft.2

Please explain the answer, Thank you.

  • Math - please help -

    The height is 280 ft.
    Distance from apex to mid-point of base = 356.1 ft = slant height.
    Area of one side
    = (1/2)base*slant-height
    then choose the correct answer.

  • Math - please help -

    78342 ft2

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