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)\"\" \"About 
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Determine the area of the largest rectangle that can be inscibed in the circle x^2 + y^2=a^2
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\n" ); document.write( "By \"largest\" I assume you mean \"has the greatest area\".
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\n" ); document.write( "That rectangle would be a square.
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\n" ); document.write( "If the square fits inside, it's diagonal must be the
\n" ); document.write( "diameter of the circle.
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\n" ); document.write( "The diameter = 2*radius = 2*a
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\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)
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\n" ); document.write( "So the area is x*x = (a*sqrt(2))^2 = 2a^2 sq. units
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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