document.write( "Question 281756: if the diameter of a circle is 1.3 x 10^-12meters, what is the radius \n" ); document.write( "
Algebra.Com's Answer #204689 by Alan3354(69443)\"\" \"About 
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radius = 1/2 the diameter
\n" ); document.write( "= 0.65 x 10^-12 meters
\n" ); document.write( "= 6.5*10^-13
\n" ); document.write( "or 6.5E-13
\n" ); document.write( "= 650 femtometers
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