document.write( "Question 1014342: The area of the circle is 81pi sq. cm. Find the arc length of this circle that subtends a central angle of pi/3. \n" ); document.write( "

Algebra.Com's Answer #630650 by ikleyn(52847) $\"\"$ $\"About$

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\n" ); document.write( "The area of the circle is 81pi sq. cm. Find the arc length of this circle that subtends a central angle of pi/3.
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document.write( "1. To find the radius, use this equation\r\n" );
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document.write( "   S = ,   or\r\n" );
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document.write( "    = .\r\n" );
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document.write( "   Then you immediately get r = 9 m.\r\n" );
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document.write( "2. The arc length is \r\n" );
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document.write( "   L =  =  =  =  m.\r\n" );
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document.write( "   Calculate yourself 3*3.14.\r\n" );
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