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    TBC's Avatar
    TBC Posts: 1, Reputation: 1
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    #1

    Dec 15, 2008, 07:02 PM
    Volume and surface area of octagon
    If a shape of pool will be octagon and perimeter is 480 feet and height is 5feet what's the surface area and volume?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Dec 16, 2008, 01:01 PM
    The area of an octagon, can be gotten from the formula

    . Where r is the length from the center of a vertex.

    Use a little trig to find r from your given side length of 60, plug it in and you're set.

    Check out this site for a nice tutorial on the matter:

    http://www.mathwords.com/a/area_regular_polygon.htm
    dgre1082's Avatar
    dgre1082 Posts: 1, Reputation: 1
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    #3

    May 30, 2010, 11:34 PM
    In octagon sides are 3.20 m long. What the surface area
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