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document.write( "To find the area of the larger circle, we need to find its radius.\r\n" );
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document.write( "The red and green triangles are similar 45-45-90 isosceles right triangles.\r\n" );
document.write( "Since the green hypotenuse is given to be
, it is a standard\r\n" );
document.write( "1-1-
isosceles right triangle, and its legs are 1 each.\r\n" );
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document.write( "The radius of the larger circle is the sum of the red and green hypotenuses.\r\n" );
document.write( "The green hypotenuse is
and is a radius of the small circle, So, the \r\n" );
document.write( "vertical red side is also
, because it is also a radius of the smaller circle. \r\n" );
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document.write( "We set up a proportion between the sides of the two similar triangles:\r\n" );
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document.write( "Cross-multiply and get\r\n" );
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document.write( "Using 

,\r\n" );
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cm2\r\n" );
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document.write( "Edwin
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