document.write( "Question 979530: how do you find the perimeter of a shaded region of a circle \r
\n" ); document.write( "\n" ); document.write( "the shaded region is 140 degrees
\n" ); document.write( "the area of the shaded region is 126π
\n" ); document.write( "

Algebra.Com's Answer #600818 by josgarithmetic(39620)\"\" \"About 
You can put this solution on YOUR website!
Two radii and the length of the arc with this radius.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%28140%2F360%29pi%2Ar%5E2=126pi\"
\n" ); document.write( "The fraction of the full-circle's area given to be equal to \"126pi\".\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%287%2F18%29pi%2Ar%5E2=126pi\"
\n" ); document.write( "\"r%5E2=126pi%2818%2F7%29%2Fpi\"
\n" ); document.write( "\"r%5E2=%2818%5E2%29\"
\n" ); document.write( "\"highlight%28r=18%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The length of the arc, \"2pi%2Ar%28140%2F360%29=%282%2A7%2F18%29pi%2Ar=%282%2A7%2F18%29%2A18%2Api=highlight%2814pi%29\".\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The perimeter of this sector is \"r%2Br%2B14pi=18%2A2%2B14pi=highlight%28highlight%2836%2B14pi%29%29\".
\n" ); document.write( "
\n" );