document.write( "Question 1089534: The tires on a car have a diameter of 27 inches. The car runs over a pebble, which sticks inside the tread of one of the tires. If the pebble on the tire rotates at a speed of 4 revolutions per second, find the speed of the car in miles per hour.
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Algebra.Com's Answer #703869 by ankor@dixie-net.com(22740)\"\" \"About 
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The tires on a car have a diameter of 27 inches.
\n" ); document.write( " The car runs over a pebble, which sticks inside the tread of one of the tires. If the pebble on the tire rotates at a speed of 4 revolutions per second, find the speed of the car in miles per hour.
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\n" ); document.write( "Find the circumference, mult by the rev per sec, times 3600 sec in a hr
\n" ); document.write( "Divide by 12 and 5280
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\n" ); document.write( "\"%28%28pi%2A27%2A4%2A3600%29%29%2F%28%285280%2A12%29%29\" = 19.3 mph
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