document.write( "Question 149138: What is the area enclosed by a circular sector whose radius is r and arc length is s. \n" ); document.write( "
Algebra.Com's Answer #109395 by Earlsdon(6294)\"\" \"About 
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You could try proportions on this problem:
\n" ); document.write( "Let's compare the ratio of the arc length, S, to the circumference of the circle, C, with the ratio of the area enclosed by the sector \"A%5Bs%5D\" to the area of the entire circle \"A%5Bc%5D+=+%28pi%29r%5E2\". Remember that \"C+=+2%28pi%29r\"
\n" ); document.write( "\"S%2FC+=+A%5Bs%5D%2FA%5Bc%5D\"
\n" ); document.write( "\"S%2F2%28pi%29r+=+A%5Bs%5D%2F%28pi%29r%5E2\" Simplify and solve for \"A%5Bs%5D\"
\n" ); document.write( "\"S%28pi%29r%5E2%2F2%28pi%29r+=+A%5Bs%5D\"
\n" ); document.write( "\"A%5Bs%5D+=+Sr%2F2\"
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