document.write( "Question 1114436: A stop sigh is a regular octagon. The manufacturer can make 6 stop signs from a peice of 60 In by 90 in sheet metal. How much aluminum is left?\r
\n" ); document.write( "\n" ); document.write( "I already tried to find the area of 1 octagon by using the side length of 15 (even though one is not given) to find the perimeter and apothem, and put them in the area of a regular polygon formula, then multiplied the area I got by 6 and subtracted that number from the area of the aluminum, but I always got negative numbers because I ended up with the equation 5,400-6,518.4=-1,118.4 but since you can’t have a negative area, I know I’m doing it wrong.
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Algebra.Com's Answer #729391 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
You have to know the correct length of a side of the octagon.
\n" ); document.write( "If it is not given. You can only guess. You did; that is why
\n" ); document.write( "you got an unacceptable result.\r
\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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