document.write( "Question 338744: a pizza with a 25cm diameter cost $4.60.
\n" ); document.write( "a pizza with a 31cm diameter cost $6.00.
\n" ); document.write( "How do you work how which has the best value?
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Algebra.Com's Answer #242813 by rfer(16322)\"\" \"About 
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A=3.14r^2
\n" ); document.write( "A=3.14*156.25
\n" ); document.write( "A=490.625 sq cm/4.60=106.67 sq cm per dollar
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\n" ); document.write( "A=3.14*240.25
\n" ); document.write( "A=754.385 sq cm/6=125.73 sq cm per dollar
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\n" ); document.write( "Find the unit price to compare.
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