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A store manager set up a cardboard display to advertise a new brand of perfume. The display is a square pyramid whose base is 18 inches on each side. The height of each triangular face of a puramid is 12 inches. How much cardboard was used to make the display.

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  1. you have a square of side 18
    and 4 triangles with base 18 and height 12.

    So, since you know how to find the area of squares and triangles, just add 'em up.

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  2. First you do Base X Height
    18 x 12= 216
    Because it's a squared pyramid you
    divide 216 by 2
    216/2 = 108. (set aside)
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    Then you
    Multiply 108 by 4 because there are 4 triangular faces.
    108 X 4 = 432 (area of height)
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    BASE IS 18 SQUARED = 324

    Add the base of 324 + the height of 432 = 756 in. squared.

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  3. GET OUT OF ME SWAMP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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