The lengths of the two sides of an isosceles triangle are 3 and 5. Find all possible values for the perimeter of this triangle?

The length of the first side is 3 cm.
The length of the second side is 5 cm.
Let’s define the perimeter of an isosceles triangle. We write down the solution.
Since the triangle is isosceles, it means that its two sides are equal.
Determine the perimeter of the triangle if the two sides are equal to 3 cm.
P = a + b + c.
The perimeter is the sum of all the lengths of the sides of the triangle.
P = 3 + 3 + 5 = 11 cm.
If the two sides are 3 cm, then the perimeter is 11 cm.
P = 5 + 5 + 3 = 13 cm.
If the two sides are 5 cm, then the perimeter is 13 cm.
Answer: 11 cm or 13 cm.