document.write( "Question 423495: Find Area of a pentagon with radius 9cm \n" ); document.write( "
Algebra.Com's Answer #295362 by Alan3354(69443) You can put this solution on YOUR website! Area = nR^2*sin(360/n)/2 for all regular polygons \n" ); document.write( "= 5*81*sin(72)/2 \n" ); document.write( "= 202.5*sin(72) \n" ); document.write( "=~ 192.5889 sq cm \n" ); document.write( " \n" ); document.write( " |