The perimeter of the quadrilateral ABCD if AB = 5cm, side BC is 2 times
| April 27, 2021 | education
The perimeter of the quadrilateral ABCD if AB = 5cm, side BC is 2 times larger than side AB, and side CD is 4cm less than side BC, but 3cm larger than side AD.
1) Let us find out how long the BC side has, if it is known that it is 2 times longer than the AB side, and the AB side has a length of 5 cm.
BC = 5 * 2 = 10 cm.
2) Find out how long the CD side is, if it is known that it is 4 cm less than the BC side, and the BC side is 10 cm long.
CD = 10 – 4 = 6 cm.
3) Find out what is the length of the AD side, if it is 3 cm less than the CD side, and its length is 6 cm.
АD = 6 – 3 = 3 cm.
4) Find out what the perimeter of the rectangle is.
5 + 10 + 6 + 3 = 24 cm.
Answer: the perimeter of the rectangle is 24 cm.
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