Find the perimeter of an isosceles triangle with a base of 7 cm and a side of 13 cm.

According to the condition of this problem, it is necessary to find the perimeter of an isosceles triangle if we know the base and the side. Thus, we know all three sides of it. As you know, the perimeter of any polygon is equal to the sum of its sides.

In our case, the triangle is isosceles, which means its sides are equal to each other and equal to 13 centimeters. The base is also set – 7 centimeters. So, we are given all three sides of it.

Thus, the perimeter of the specified triangle can be expressed as follows:

7 + 13 + 13 = 33 (cm);

Answer: The perimeter of a given triangle is 33 cm.