If the circumference of a triangle is 10 cm, the length of the third side is () cm

If the circumference of a triangle is 10 cm, the length of the third side is () cm


Let the equal side be x and the third side be y
Then 2x + y = 10 and because 2x > y > 0
So x = 4, y = 2 or x = 3, y = 4