document.write( "Question 733277: Arc length for central angle θ=20 degrees r=4m find the perimeter \n" ); document.write( "
Algebra.Com's Answer #448329 by stanbon(75887)\"\" \"About 
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Arc length for central angle θ=20 degrees r=4m
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\n" ); document.write( "find the perimeter:
\n" ); document.write( "P = 2(pi)(4m) = 8pi*m
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\n" ); document.write( "Arc length if central angle = 20 degrees is
\n" ); document.write( "(20/360)(8pi*m)
\n" ); document.write( "= (1/18)(8*pi*m)
\n" ); document.write( "= (4m/9)pi
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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