Answer:
The perimeter of a triangle is the sum of the lengths of all its sides. Given that the perimeter of the isosceles triangle is 47 cm and the sum of the equal sides is 38 cm, we can find the length of the third side by subtracting the sum of the equal sides from the perimeter.
So, the length of the third side is:
47 cm (perimeter) - 38 cm (sum of equal sides) = **9 cm**
So, the correct answer is C) 9 cm.
Explanation: