document.write( "Question 1109023: find the arc length s, of an arc with a central angle O=7pi/4 and radius r=4 inches
\n" ); document.write( "this is really confusing because it does not give me a degree
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Algebra.Com's Answer #724041 by Alan3354(69443)\"\" \"About 
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find the arc length s, of an arc with a central angle O=7pi/4 and radius r=4 inches
\n" ); document.write( "this is really confusing because it does not give me a degree
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\n" ); document.write( "2pi radians = 1 revolution = 360 degs
\n" ); document.write( "7pi/4 is 7/8 of a revolution = 315 degs
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\n" ); document.write( "Arc length = r*angle = 4*(7pi/4) = 7pi inches
\n" ); document.write( "degrees are not needed.
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