document.write( "Question 209013: I need help figuring this out.
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document.write( "The area of a circle 28 square meters. What is its cicumference? (Use A=nr^2 and C=2nr to figure out the problem) \n" );
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Algebra.Com's Answer #158011 by rfer(16322)![]() ![]() ![]() You can put this solution on YOUR website! A=Pir^2 \n" ); document.write( "28=3.14(r)^2 \n" ); document.write( "(r)^2=28/3.14 \n" ); document.write( "r^2=8.9 \n" ); document.write( "sq rt of r=2.97 \n" ); document.write( "----------------- \n" ); document.write( "C=2Pir \n" ); document.write( "C=2(3.14)(2.97) \n" ); document.write( "C=18.75 \n" ); document.write( " |