document.write( "Question 269373:  By counting very quickly you notice that your car tire makes 672 revolutions in one mile. What is the radius of the tire rounded to the nearest inch?\r
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document.write( "(1) 14 (2) 15 (3) 16 (4) 17 (5) None of the above \n" );
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Algebra.Com's Answer #197431 by mananth(16946)    You can put this solution on YOUR website! let the diameterof the tire be x\r \n" ); document.write( "\n" ); document.write( "for one revolution it covers a distance of pi*d inches\r \n" ); document.write( "\n" ); document.write( "for 672 revolutions it will make 672*pi*d inches\r \n" ); document.write( "\n" ); document.write( "63360 inches=672 *22/7 *d\r \n" ); document.write( "\n" ); document.write( "d= 63360*7 / 22 *672 \n" ); document.write( "d=30 inches \n" ); document.write( "so radius = 15 inches\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "  |