Thank you.

Let the square be x. Perimeter of square is 12x.

12x=4(12-x)

X=3.

Is my steps correct?thanks.

Thank you.

Let the square be x. Perimeter of square is 12x.

12x=4(12-x)

X=3.

Is my steps correct?thanks.

mr.tan

I believe you meant “Let the length of the longest side of the triangle be x”? Other than that, the rest of the steps are correct. Good job!

Question: There is an issue with the problem itself. Can you spot it? My explanation below in a very light cyan color. Select it to see.

If x = 3, then the sum of the other 2 sides is 12 – 3 = 9. So at least one of the other 2 sides is 4.5cm. That means x is not the longest side. The question contradicts itself. ðŸ™‚ It probably meant to say the length of “a side” or “the shortest side”.