document.write( "Question 1182220: The area of the shaded region represents one-third of the total, What is the
\n" ); document.write( "size of the radii such that this is possible? \r
\n" ); document.write( "\n" ); document.write( "The radius of the whole circle is 12cm while the shaded region is a ring in
\n" ); document.write( "the middle with a small not shaded circle in the middle. \n" ); document.write( "

Algebra.Com's Answer #812307 by MathTherapy(10555) $\"\"$ $\"About$

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\n" ); document.write( "The area of the shaded region represents one-third of the total, What is the
\n" ); document.write( "size of the radii such that this is possible? \r
\n" ); document.write( "\n" ); document.write( "The radius of the whole circle is 12cm while the shaded region is a ring in
\n" ); document.write( "the middle with a small not shaded circle in the middle.
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Area of larger circle: 
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document.write( "With radius of smaller circle being r, we get the area of the smaller circle as: 
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document.write( "Area of shaded region: 
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document.write( "Area of shaded region is also  the area of the larger circle.
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document.write( "We then get: 
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document.write( "Since this is a measurement, CORRECT answer is , as the negative value for the radius is IGNORED. \n" );
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