1) We find out the width of the door, if it is known that it is a quarter of its height, and the height of the door is 2 meters.
2/4 = 0.5 meters.
2) Find the area of the door if it is known that it has a rectangular shape with sides of 2 m and 5 m.
2 * 0.5 = 1 m².
3) Find the perimeter of the door if its sides are known.
(2 + 0.5) * 2 = 5 meters.
Answer: the perimeter of the door was 5 meters, and the area of the door was 1 m².
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