document.write( "Question 241310: George Ferris built the first Ferris wheel for the World’s Exposition in Chicago in 1892. Its diameter was 250 ft. If this wheel rotated once every 5 minutes, what was the speed of a car on the circumference of the wheel in feet per second?\r
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document.write( "A) 157 ft/min B) 15.7 ft/sec C) 2.618 ft/min D) 2.618 ft/sec E) 157 min/hr \n" );
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Algebra.Com's Answer #176710 by Theo(13342)![]() ![]() You can put this solution on YOUR website! diameter is 250 feet. \n" ); document.write( "radius is half that = 125 feet. \n" ); document.write( "circumference is 2*pi*r = 2*pi*125 = 785.3981634 feet = 1 rotation of the ferris wheel. \n" ); document.write( "785.3981634 / 300 = 2.617993878 feet per second.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that would be selection D. \n" ); document.write( " \n" ); document.write( " |