document.write( "Question 517025: The premiter of an equilateral triangle is 27 meters. What is the length of an altitude. Round to the nearest tenth??
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Algebra.Com's Answer #344602 by JBarnum(2146)\"\" \"About 
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equalateral triagle means all sides are the same
\n" ); document.write( "a+b+c=a+a+a
\n" ); document.write( "so \"3a=27\"
\n" ); document.write( "\"a=9\"
\n" ); document.write( "altitude is the line that is drawn from the top point to a 90 degree angle at the base. this splits the base exactly in half so one side is 4.5
\n" ); document.write( "b= the altitude line and 9= hypot
\n" ); document.write( "\"a%5E2%2Bb%5E2=c%5E2\"
\n" ); document.write( "\"4.5%5E2%2B+b%5E2=9%5E2\"
\n" ); document.write( "\"20.25%2B+b%5E2=81\"
\n" ); document.write( "\"b%5E2=60.75\"
\n" ); document.write( "\"sqrt%28b%5E2%29=sqrt%2860.75%29\"
\n" ); document.write( "\"b=7.7942\"
\n" ); document.write( "\"highlight%28b=7.8%29\"\r
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