document.write( "Question 840371: My grandson is working this problem((A=80cm2 then there is a circle with a 45 degree area blacked out)). He is supposed to use a proportion to find the area of each shaded sector. \n" ); document.write( "

Algebra.Com's Answer #506168 by Edwin McCravy(20054) $\"\"$ $\"About$

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document.write( "45 degrees is to 360 degrees as the area of the sector is to the area of the whole circle:\r\n" );
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document.write( "45°:360° = x:80cm²\r\n" );
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document.write( "360x = (80)(45)\r\n" );
document.write( "360x = 3600\r\n" );
document.write( "   x = \r\n" );
document.write( "   x = 10\r\n" );
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document.write( "The area of the sector is 10 cm²\r\n" );
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document.write( "Edwin

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