The width of the rectangle is 3 cm, which is 4 cm less than its length. Find the perimeter of the rectangle.

Since the length of the rectangle is 4 cm longer than the width, and the width of the rectangle is 3 cm, we get that the length will be:

3 + 4 = 7 cm.

To find the perimeter of a rectangle, add the lengths of all its sides. As a result, we get:

P = 7 + 3 + 7 + 3 = 10 + 10 = 20 cm.

Answer: 20 cm.

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.