document.write( "Question 204918: The diagonal of a square is 42.5 cm. Calculate the perimetre and area of the square. \n" ); document.write( "
Algebra.Com's Answer #154672 by alicealc(293)\"\" \"About 
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diagonal of a square with the side x is \"x%2Asqrt%282%29\"
\n" ); document.write( "\"x%2Asqrt%282%29=42.5\"
\n" ); document.write( "\"x=42.5%2Fsqrt%282%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "perimeter = 4x
\n" ); document.write( "= \"4%2A42.5%2Fsqrt%282%29+=+170%2Fsqrt%282%29\"
\n" ); document.write( "= \"%28170%2Fsqrt%282%29%29%2A%28sqrt%282%29%2Fsqrt%282%29%29\"
\n" ); document.write( "= \"%28170%2Asqrt%282%29%29%2F2\"
\n" ); document.write( "= \"85%2Asqrt%282%29+cm\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "area = \"x%5E2\"
\n" ); document.write( "= \"%2842.5%2Fsqrt%282%29%29%5E2\"
\n" ); document.write( "= \"1806.25%2F2\"
\n" ); document.write( "= 903.125 cm^2
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