document.write( "Question 958122: How many revolution per second will an automobile wheel make at the rate of 63.4km per hour if the diameter is 5.4dm??p \n" ); document.write( "

Algebra.Com's Answer #854581 by ikleyn(53937) $\"\"$ $\"About$

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\n" ); document.write( "How many revolutions per second will an automobile wheel make at the rate of 63.4km per hour
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\n" ); document.write( "\n" ); document.write( "        This is a simple arithmetic problem, but the answer \"1957 revolutions per second\"
\n" ); document.write( "        given in the post by @lwsshar3 is absolutely absurdist.\r
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\n" ); document.write( "\n" ); document.write( "        Not only the answer, but his approach in whole and his method are \r
\n" ); document.write( "\n" ); document.write( "        absolutely inappropriate for the solution and for teaching.\r
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\n" ); document.write( "\n" ); document.write( "        He concentrates on deriving very long formula, which is not needed,\r
\n" ); document.write( "\n" ); document.write( "        instead of concentrating on the problem's meaning. As a result, he was not able \r
\n" ); document.write( "\n" ); document.write( "        to solve the problem correctly.\r
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\n" ); document.write( "\n" ); document.write( "        See below my correct solution, as it should be done by a 5-th or 6-th grade student.\r
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document.write( "The diameter of the wheel is d = 5.4 decimeters, or d = 54 centimeters.\r\n" );
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document.write( "Hence, the circumference of the wheel is  =  = 169.65 cm.\r\n" );
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document.write( "The car moves forward 63.4 km per hour, or   = 17.61 meters per second, or 1761 centimeters per second.\r\n" );
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document.write( "From it, the number of revolutions per second is the ratio   = 10.38, approximately.\r\n" );
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document.write( "ANSWER.  The number of revolutions per second is 10.38.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved correctly.\r
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\n" ); document.write( "\n" ); document.write( "As I read this post by @lwsshar3, it proves to me once again, for the 1001st time, that this person does not read
\n" ); document.write( "what his computer code produces.\r
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