The perimeter of triangle ABC is 62 cm BC = 17 cm AB = CA find the length of the side AB.

We are faced with a geometric problem that can only be solved if you know the formulas for the perimeter of a rectangle.
But first, in order to choose the desired course of solution, we will draw up a short condition by carefully studying the text:
R ABC – 62 centimeters;
BC – 17 centimeters;
AB = AC -? centimeters;
First, remember the formula for the perimeter of a triangle:
P = AB + BC + AC;
Let’s find the sum of the sides AB and AC:
62 – 17 = 45 centimeters;
Now we find the length of the side AB:
45: 2 = 22.5 centimeters – length AB and AC;
Answer: 22.5 centimeters.