document.write( "Question 525402: the diagonal of a square is the square root of 15. what is the perimeter of the square? \n" ); document.write( "
Algebra.Com's Answer #348090 by oberobic(2304) ![]() You can put this solution on YOUR website! The diagonal of a square is the hypotenuse of a right triangle. \n" ); document.write( "Applying the Pythagorean formula... \n" ); document.write( ". \n" ); document.write( "15 = a^2 + b^2 \n" ); document.write( ". \n" ); document.write( "Since it is a square, we know that a=b \n" ); document.write( ". \n" ); document.write( "15 = 2a^2 \n" ); document.write( "a^2 = 7.5 \n" ); document.write( "a = sqrt(7.5) \n" ); document.write( "a = 2.738612787525831 \n" ); document.write( ". \n" ); document.write( "So the sides are 2.738612787525831. \n" ); document.write( ". \n" ); document.write( "The perimeter = 4*2.738612787525831 = 10.95445115010332 \n" ); document.write( ". \n" ); document.write( "Done. \n" ); document.write( " |