document.write( "Question 1014118: A truck with 54-in.-diameter wheels is traveling at 45 mi/h.\r
\n" );
document.write( "\n" );
document.write( "How many revolutions per minute do the wheels make? \r
\n" );
document.write( "\n" );
document.write( "PLEASE HELP ME \n" );
document.write( "
Algebra.Com's Answer #630476 by rothauserc(4718)![]() ![]() You can put this solution on YOUR website! 1) The truck travels 45 / 60 = 3/4 mile per minute or 3/4 * 5280 = 3960 feet per minute. \n" ); document.write( ": \n" ); document.write( "2) Diameter of wheel is 54/12 = 4.5 feet. \n" ); document.write( ": \n" ); document.write( "3) circumference of the wheel is 4.5 * pi = 9/2 * 22/7 = 14.142857143 approx 14.14 feet \n" ); document.write( ": \n" ); document.write( "5) number of revolutions per minute for a wheel is 3960 / 14.14 = 279.99 = 280 revolutions \n" ); document.write( "******************************************************************************* \n" ); document.write( "Note that you did not say how many wheels the truck has so I could only do the calculation for one wheel. \n" ); document.write( " \n" ); document.write( " |