document.write( "Question 429889: Find the side length of a equilateral triangle with an area of 12 radical 3. \n" ); document.write( "
Algebra.Com's Answer #298599 by poliphob3.14(115)\"\" \"About 
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Solution:Apply Heron's Formula for equilateral triangle with side x xm have:\r
\n" ); document.write( "\n" ); document.write( "\"A=sqrt%28%283x%2F2%29%2A%283x%2F2-x%29%5E3%29\", substituting our data we have:\r
\n" ); document.write( "\n" ); document.write( "\"12%2Asqrt%283%29=sqrt%28%283x%2F2%29%2A%28x%5E3%2F8%29%29\", squaring both sides we have:\r
\n" ); document.write( "\n" ); document.write( "\"432=3x%5E4%2F16\"\r
\n" ); document.write( "\n" ); document.write( "\"6912=3x%5E4\", divide by 3\r
\n" ); document.write( "\n" ); document.write( "\"2304=x%5E4\", => x=fourth root of 2304 =>. Approximately x=7 cm.\r
\n" ); document.write( "\n" ); document.write( "Answer: The side of equilateral triangle with area 20.78 cm^2 is 6.93 cm.\r
\n" ); document.write( "\n" ); document.write( "Done.
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