One side of the rectangle is 2 times larger than the other. The perimeter is -12 cm. What is the smaller side of the rectangle?

We denote by variable x the length of the shorter of the sides of this rectangle.

Therefore, according to the condition of the problem, we can express the length of the longer side in terms of 2 centimeters.

Knowing by the condition of the problem that the perimeter of a rectangle (by definition it is equal to the doubled sum of its sides) is 12 centimeters, we draw up an equation and determine the lengths of the sides of the specified rectangle:

2 (x + 2x) = 12;

3x = 6;

x = 2;

2x = 2 * 2 = 4.

Answer: The length of the smaller side of the rectangle is 2 centimeters, the larger side is 4.