The perimeter of a rectangle is 24 cm, one side of this rectangle is 2 times longer than the other.

The perimeter of a rectangle is 24 cm, one side of this rectangle is 2 times longer than the other. Find the length of each side of this rectangle.

1. Let the first side of the rectangle be x cm long.

2. Then the second side of the rectangle is 2 cm long.

3. Composition them an equation and find the length of the first side of the rectangle if it is known that the perimeter of the rectangle is 24 cm. And the perimeter of the rectangle is the sum of the lengths of all its sides.

x + x + 2x + 2x = 24;

6x = 24;

x = 24/6;

x = 4 cm.

4. Calculate the length of the second side of the rectangle.

4 * 2 = 8 cm.

Answer: The length of the first side of the rectangle is 4 cm, the length of the second side is 8 cm.