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    zabria's Avatar
    zabria Posts: 2, Reputation: 1
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    #1

    Dec 11, 2010, 02:26 PM
    Trigonometry
    Each side of a regular pentagon is 48 cm. find the length of the radius of a circle inscribed in a pentagon
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Dec 11, 2010, 04:00 PM



    or, if in degrees:



    n is the number of sides and L is the length of a side.

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