document.write( "Question 206955: Consider an area of cm2 bounded by two concentric circles ( the figure is called an annulus). Determine the radius of the inner circle ( in units of cm) if the outer and the inner diameters of the of the annulus differ by 2 cm. \n" ); document.write( "
Algebra.Com's Answer #156457 by stanbon(75887)\"\" \"About 
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Consider an area of cm2 bounded by two concentric circles ( the figure is called an annulus). Determine the radius of the inner circle ( in units of cm) if the outer and the inner diameters of the of the annulus differ by 2 cm.
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\n" ); document.write( "Draw the picture.
\n" ); document.write( "Area of the annulus is ? cm^2/
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\n" ); document.write( "You did not post the area of the annulus
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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