1) First, let’s find the lengths of the sides of the rectangle. To do this, write an equation where we represent its width as x, and its length as 5x.
(x + 5x) * 2 = 216;
6x * 2 = 216;
6x = 216/2;
6x = 108;
x = 108/6;
x = 18.
The rectangle is 18 centimeters wide.
2) Calculate the length of the rectangle.
18 * 5 = 90.
The rectangle is 90 centimeters long.
3) Let us find its area using the obtained data on the length of its sides.
90 * 18 = 1620.
Answer: The area of a rectangle is 1620 square centimeters.
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.