The perimeter of a floor of a room is 18m What is the area of four walls of the room, if height is 3m?
Answer: 54m²
Explanation
54 m²
∴ The area of the four walls of the room is 54 m2.
Think of the floor as a square. Suppose the wall is 20 feet long. Multiply 20 by 4 to get a circumference of 80 feet. Double the width and length measurements and add them to calculate the perimeter of the rectangular room.
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