document.write( "Question 1041315: Hi, I'm having trouble figuring out this problem:\r
\n" ); document.write( "\n" ); document.write( "How many feet does a wheel with a diameter of 16 inches travel after four revolutions?\r
\n" ); document.write( "\n" ); document.write( "Thank you.
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Algebra.Com's Answer #656330 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
The formula in finding the arc length is\r
\n" ); document.write( "\n" ); document.write( "\"s+=+r%2Atheta\",\r
\n" ); document.write( "\n" ); document.write( "where s = arc length, r = radius, and \"theta\" = angular measure in radians.\r
\n" ); document.write( "\n" ); document.write( "Now \"theta+=+%284+rev%29%2A%28%282%2Api%29%2Frev%29+=+8%2Api\", and radius = diameter/2 = 8 inches.\r
\n" ); document.write( "\n" ); document.write( "==> \"s+=+r%2Atheta+=+8%2A8pi+=+64pi\" inches.
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