Find the sum of the sides of a triangle if its sides are 3 cm, 8 cm, and 4 cm.

To find the sum of all the sides of a triangle, that is, the perimeter of a given triangle, you need to add all three sides of the triangle.

If in the condition of the problem, it is said, the sides of this triangle are equal: 3 cm, 8 cm and 4 cm.

So we need it.

3 + 8 + 4 = 15.

1) 3 + 8 = 11;

2) 11 + 4 = 15.

Answer: The sum of the sides of the triangle is 15 cm.