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Math Help - Apothem

  1. #1
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    Apothem

    My answer is 30 ft. am I correct.
    (5)(12)./.2=30 ?
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  2. #2
    Moo
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    Hello,

    What do you find for BF ?
    Use the Pythagorean theorem : hypotenuse˛=side˛+otherside˛
    BF˛=AF˛+AB˛

    Then, you know that the perimeter will be 5 times BF, as it is a regular pentagon.


    For the area, it's 5 times the area of SEF.
    You have SR, you have EF, so what is the area of this triangle ?
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  3. #3
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    This page may help you.
    Pentagon -- from Wolfram MathWorld
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  4. #4
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    thanks MOO

    now i have another one for you. wait for the posting.
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