1. Find the area of the rectangle:
S = a * b = 16 * 4 = 64 (cm ^ 2).
2. The area of the square is equal to the area of the rectangle according to the problem statement. The formula for the area of a square is S = a ^ 2. Knowing the area of the square, we find its side:
a = √S = √64 = 8 (see)
Answer: the side of the square is 8 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.