document.write( "Question 291025: The side of a square is 5 cm. shorter than the side of an equilateral triangle. The perimeter of the square is 7 cm. less than the perimeter of the triangle. Find the lengths of a side of the square and of a side of the triangle. \n" ); document.write( "
Algebra.Com's Answer #210565 by Greenfinch(383)\"\" \"About 
You can put this solution on YOUR website!
Side of square is X, side of triangle is X+8
\n" ); document.write( "perimeter of square is 4X, perimeter of triangle is 3X + 24
\n" ); document.write( "We are told that 4X + 7 = 3X + 24
\n" ); document.write( "or X = 17
\n" ); document.write( "So side of square is 17, side of triangle is 25
\n" ); document.write( "perimeter of square is 68, perimeter of triangle is 75
\n" ); document.write( "It checks
\n" ); document.write( "
\n" );