The perimeter of the triangle is 54 cm, and its width is 3 cm less than its length. find the sides of the triangle.

In order to find the lengths of the sides of the rectangle, we compose and solve the equation.

Let’s start by considering the condition of the problem. It says that the perimeter of the rectangle is 54 cm, and its width is 3 cm less than its length.

Let’s start by introducing the variable x, denoting the length of the rectangle with it, then its width can be written as (x – 3) cm.

The perimeter of a rectangle can be found using the formula:

P = 2 (a + b);

2 (x + (x – 3)) = 54;

x + x – 3 = 27;

2x = 27 + 3;

2x = 30;

x = 30: 2;

x = 15 cm length of the rectangle and 15 – 3 = 12 cm width.