document.write( "Question 174269: The longest side of a triangle is 11 inches, the second side is 8 inches shorter than that. Find the 3rd side. \n" ); document.write( "
Algebra.Com's Answer #129239 by nerdybill(7384) You can put this solution on YOUR website! The longest side of a triangle is 11 inches, the second side is 8 inches shorter than that. Find the 3rd side. \n" ); document.write( ". \n" ); document.write( "You must apply Pythagorean theorem. \n" ); document.write( "The longest side (11 inches) is the hypothenuse. \n" ); document.write( "The second side (since it is 8 inches shorter) is 3 inches. \n" ); document.write( ". \n" ); document.write( "Therefore: \n" ); document.write( "Let x = third side \n" ); document.write( ". \n" ); document.write( "Then we have: \n" ); document.write( "x^2 + 3^2 = 11^2 \n" ); document.write( "x^2 + 9 = 121 \n" ); document.write( "x^2 = 112 \n" ); document.write( "x = {-10.583, 10.583} \n" ); document.write( ". \n" ); document.write( "Tossing out the negative answer: \n" ); document.write( "3rd side is 10.583 inches \n" ); document.write( " \n" ); document.write( " |