document.write( "Question 772304: A square has an area of 27 units. If the perimeter of the square is equal to the perimeter if the equilateral triangle, find the area of the equilateral triangle \n" ); document.write( "
Algebra.Com's Answer #470795 by josgarithmetic(39618)\"\" \"About 
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First main goal is find the side length of the equilateral triangle. \r
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\n" ); document.write( "\n" ); document.write( "SQUARE: \"27=w%5E2\" for w being length of side of the square.
\n" ); document.write( "\"w=sqrt%2827%29\"
\n" ); document.write( "\"w=3%2Asqrt%283%29\"
\n" ); document.write( "Perimeter is then \"4%2A3%2Asqrt%283%29\"
\n" ); document.write( "Perimeter is \"12%2Asqrt%283%29\"\r
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\n" ); document.write( "\n" ); document.write( "Let t = side length of equilateral triangle. Given is the perimeter is the same as that of the square, so, \"3t=4w\"
\n" ); document.write( "\"3t=12%2Asqrt%283%29\"
\n" ); document.write( "\"t=12%2Asqrt%283%29%2F3\"
\n" ); document.write( "\"highlight%28t=4%2Asqrt%283%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "WHAT WE KNOW ABOUT EQUILATERAL TRIANGLE\r
\n" ); document.write( "\n" ); document.write( "The altitude splits the triangle into two congruent right triangles of hypotenuse t and one leg of t/2. The other leg, the altitude of the equilateral triangle, is then some a, a=sqrt(t^2-(t/2)^2);
\n" ); document.write( "\"a=t%2A%28sqrt%283%29%2F2%29\"\r
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\n" ); document.write( "\n" ); document.write( "AREA OF EQUILATERAL TRIANGLES:
\n" ); document.write( "Base times height then divided by 2;
\n" ); document.write( "\"%281%2F2%29%28t%2F2%29%28a%29\"
\n" ); document.write( "\"%281%2F2%29%28t%2F2%29%28t%2Asqrt%283%29%2F2%29\"
\n" ); document.write( "\"t%5E2%28sqrt%283%29%2F8%29\"\r
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\n" ); document.write( "\n" ); document.write( "Finally substitute for value of t:
\n" ); document.write( "\"%28%284%2F3%29sqrt%2827%29%29%28sqrt%283%29%2F8%29\"
\n" ); document.write( "\"%282%5E4%2A3%2A3%2Asqrt%283%29%29%2F%289%2A2%5E3%29\"
\n" ); document.write( "\"2%2A3%2Asqrt%283%29\"
\n" ); document.write( "\"highlight%286%2Asqrt%283%29%29\"___________Final Answer\r
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\n" ); document.write( "\n" ); document.write( "NOTE: Draw a picture will help.
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