The perimeter of the rectangle is 18 cm, and one of its sides is 1 cm larger than the other. What is the area of the rectangle?

1.x centimeters is one side.

2. (x + 1) centimeters its other side.

3. Let’s make an equation.

(x + x + 1) * 2 = 18;

2x + 2x + 2 = 18;

4x = 18 – 2 = 16;

x = 16/4 = 4;

4. One side of the rectangle x = 4 centimeters.

5. Let’s define the value of another.

x + 1 = 4 + 1 = 5 centimeters.

6. Let’s find its area.

4 * 5 = 20 cm².

Answer: 20 square centimeters.