# Find the side of an isosceles triangle, if the two sides are 7 cm and 11 cm long, calculate the perimeter.

May 26, 2021 | education

| Given:

One side is 7 cm.

The second side is 11 cm.

The triangle is isosceles.

Since the triangle is isosceles, then some of its two sides are equal to each other.

There are two options:

1) The base of the figure will be equal to 7 centimeters, then its two sides are 11 centimeters each.

2) The base will be 11 centimeters long, and the sides will be 7 centimeters each.

Let’s calculate both possible perimeters:

1) 7 + 11 + 11 = 29 centimeters.

2) 7 + 7 + 11 = 25 centimeters.

Answer: 25 and 29 centimeters.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.