The width of the rectangle is 15 cm, and the length is 5 times less. We calculated the area of this rectangle.

Let us carry out a detailed analysis of the problem statement. To solve the problem, we apply geometric formulas – the area of a rectangle. Solution of the task by actions with detailed explanations:

1. Let’s calculate the length of the rectangle, taking into account that the length is 5 times less than the width equal to 15 cm. Hence the length = 15 ÷ 5 = 3 cm.

2. The area of the rectangle is found using the geometric formula: area of the rectangle = width × length. Let’s calculate, substituting numerical values: area = 15 × 3 = 45 cm².

Answer: the area of the rectangle from the problem statement is 45 cm².