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

    Feb 22, 2009, 07:26 PM
    How To Find The Volume Of A Pentagonal Prism
    The sides are 6m by 8.1m and the pentagon has a 7.2m apothem(?) and 6 m sides. Is there a formula for this? Please help ASAP!
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Feb 22, 2009, 08:42 PM

    I'm a little confused by your dimensions, but the basic formula for any solid with a uniform cross-section is the area of the face times the height.

    This link shows how to calculate the area of a regular pentagon.

    Geometry Finding the Area of a Pentagon

    Multiply that area by the height of the prism and you have the volume.
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