document.write( "Question 712541: How do you find the area of a regular octagon inscribed in a circle with radius r. \n" ); document.write( "
Algebra.Com's Answer #438040 by Alan3354(69443)\"\" \"About 
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How do you find the area of a regular octagon inscribed in a circle with radius r.
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\n" ); document.write( "There's a formula for it, but you can only remember so many formulas.
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\n" ); document.write( "It's 8 isoceles triangle with 2 sides = r
\n" ); document.write( "The vertex angle is 45 degs.
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