The length of the rectangle is 3 cm longer than the width. Its perimeter is 22 cm, find the length and width of the rectangle.

Let’s say the width of the rectangle is x cm.Then the length is (3 + x) cm.

The perimeter of a rectangle is equal to the sum of all its sides. Let’s add the equation:

x + x + 3 + x + 3 + x = 22;

4x + 6 = 22;

4x = 22 – 6;

4x = 16;

x = 4 cm.

The width of the rectangle is 4 cm.Then the length: 4 + 3 = 7 cm.

Answer: 7 cm.