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)![]() ![]() ![]() You can put this solution on YOUR website! First main goal is find the side length of the equilateral triangle. \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "SQUARE: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Perimeter is then \n" ); document.write( "Perimeter is \n" ); document.write( " \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, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \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( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "AREA OF EQUILATERAL TRIANGLES: \n" ); document.write( "Base times height then divided by 2; \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Finally substitute for value of t: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "NOTE: Draw a picture will help. \n" ); document.write( " |