document.write( "Question 957698: What is the area of a regular 15-gon with a perimeter of 180 yds.
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #585256 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "I'll just tell you how to do it.\r\n" );
document.write( "\r\n" );
document.write( "The area of the central (isosceles) triangle below is one-fifteenth of the area of\r\n" );
document.write( "the regular 15-gon.  \r\n" );
document.write( "The base of that triangle is one-fifteenth of the perimeter of the regular\r\n" );
document.write( "15-gon.  That is, \"matrix%281%2C2%2C180%2C%22yds.%22%29%2F15\" = 12 yds. \r\n" );
document.write( "The vertex angle of that isosceles triangle is one-fifteenth of 360°, or 24°.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Find the area of that triangle and multiply it by 15.\r\n" );
document.write( "The green line is the height of that triangle.\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );