Will give brainliest to correct answer.

We can solve this using the infamous Pythagorean Theorem which states that the sum of the squares of the legs equals the squares of the hypotenuse (the longest side). Using this we would square 3 and  and take the square root of their sum.





Final c = 2x +3

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm