document.write( "Question 918132: a square and an equilateral triangle have the same perimeter.the sum of one side of square and one side of the triangle is 21cm. find the length of one side \n" ); document.write( "
Algebra.Com's Answer #556926 by ewatrrr(24785)![]() ![]() You can put this solution on YOUR website! 4s = 3t and t = 21-s \n" ); document.write( "4s = 3(21-s) \n" ); document.write( "7s = 3(21) \n" ); document.write( "s = 9, side of square and t = 12 \n" ); document.write( "And..checking \n" ); document.write( "P = 36 = 36 \n" ); document.write( " |