Find the perimeter of a rectangle with a side of 5 cm if the area is 45 m2.

Let’s solve the task of actions, explaining each of them in detail.
1) 45: 5 = 9 centimeters – the other side of the rectangle, since its area is 45 meters squared, and one of the lateral side is 5 centimeters;
2) 2 * (9 + 5) = 2 * 14 = 28 centimeters – the perimeter of a rectangle with sides of 5 centimeters and 9 centimeters.
Answer: The perimeter of the rectangle is 28 centimeters.