document.write( "Question 749111: Determine the area of the largest rectangle that can be inscibed in the circle x^2 + y^2=a^2 \n" ); document.write( "
Algebra.Com's Answer #455784 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Determine the area of the largest rectangle that can be inscibed in the circle x^2 + y^2=a^2 \n" ); document.write( "---- \n" ); document.write( "By \"largest\" I assume you mean \"has the greatest area\". \n" ); document.write( "----- \n" ); document.write( "That rectangle would be a square. \n" ); document.write( "---- \n" ); document.write( "If the square fits inside, it's diagonal must be the \n" ); document.write( "diameter of the circle. \n" ); document.write( "----- \n" ); document.write( "The diameter = 2*radius = 2*a \n" ); document.write( "------- \n" ); document.write( "Letting the sides be \"x\" you get: \n" ); document.write( "x^2 + x^2 = (2a)^2 \n" ); document.write( "2x ^2 = 4a^2 \n" ); document.write( "x = a*sqrt(2) \n" ); document.write( "===== \n" ); document.write( "So the area is x*x = (a*sqrt(2))^2 = 2a^2 sq. units \n" ); document.write( "==================================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |