The perimeter of the quadrilateral ABCD is 34cm, AB = 6s, the side BC is 2 times the size of the side AB, the sides

The perimeter of the quadrilateral ABCD is 34cm, AB = 6s, the side BC is 2 times the size of the side AB, the sides CD and AD are equal. Calculate the length of the side AD.Decide on issues or actions, with a full description of the action.

1. Let’s find the side BC, if it is known that it is 2 times larger than AB:
2 * 6 cm = 12 cm.
2. Subtract the sum of sides AB and BC from the perimeter of the quadrangle, we get the sum of the sides CD and AD:
34 – (12 + 6) = 34 – 18 = 16 cm.
3. Since CD = AD, then dividing the sum of these sides by two, we get the length of each of these sides:
16 cm / 2 = 8 cm.
Answer: AD side is 8 cm.