document.write( "Question 42092: I am making a round fairy princess skirt for my granddaughter. I have a solid circle cut out (ie, no seams). I need to put a hole in the center for her waist to fit into. The measurement of her waist is 20\". I can't remember how to find the radius of a circle so I can fold the fabric and cut out a hole that would have the circumference of 20\". \r
\n" ); document.write( "\n" ); document.write( "Thank you in advance for your help. If you show me the equation I would really appreciate it. I used to love math but haven't used it like this for 40 years. \r
\n" ); document.write( "\n" ); document.write( "Best regards,
\n" ); document.write( "Tina
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Algebra.Com's Answer #27233 by psbhowmick(878)\"\" \"About 
You can put this solution on YOUR website!
If radius of a circle is 'r' then the circumference = \"2%2A%28pi%29%2Ar\".
\n" ); document.write( "Measurement of waist is 20\" means the circumference is 20\".
\n" ); document.write( "Thus, \"2%2A%28pi%29%2Ar+=+20\"
\n" ); document.write( "or \"r+=+10%2F%28pi%29\"
\n" ); document.write( "or r = 3.183\"\r
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\n" ); document.write( "\n" ); document.write( "So the reqd. radius is 3.183 inches.
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