document.write( "Question 247268: a right isosceles triangle has perimeter 12cm find its area? \n" ); document.write( "
Algebra.Com's Answer #180429 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! a right isosceles triangle has perimeter 12cm find its area? \n" ); document.write( "---------------- \n" ); document.write( "The sides will be s, s and s*sqrt(2) \n" ); document.write( "2s + s*sqrt(2) = 12 \n" ); document.write( "s*(2 + sqrt(2)) = 12 \n" ); document.write( "s = 12/(2 + sqrt(2)) \n" ); document.write( "-------------- \n" ); document.write( "Area = s^2/2 \n" ); document.write( "A = 144/(4 + 2 + 4sqrt(2)) = 72/(3 + 2sqrt(2)) \n" ); document.write( "A =~ 12.353 sq cm \n" ); document.write( " \n" ); document.write( " |