SOLUTION: The sides of a square are one third the length of the sides of an equilateral triangle. The difference between their perimeters is 40 cm. What is the length of each side of the squ

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Question 1010089: The sides of a square are one third the length of the sides of an equilateral triangle. The difference between their perimeters is 40 cm. What is the length of each side of the square? What is the length of each side of the triangle?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
SQUARE, side length x

EQ. TRIANGLE, side length 3x


Difference in perimeters is 40.
3%2A3x-4%2Ax=40
9x-4x=40
5x=40
highlight%28x=8%29