The perimeter of a floor of a room is 18m What is the area of four walls of the room, if height is 3m?
- 42 m²
- 21m²
- 54m²
- none of these
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.
Related MCQs
- All real numbers
- [0, π]
- [-1, 1]
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 180°
- 120°
- 90°
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 4 times
- 5 times
- 2 times
- None
اس سوال کو وضاحت کے ساتھ پڑھیں
- 90 degrees
- 180 degrees
- 270 degrees
- 360 degrees
اس سوال کو وضاحت کے ساتھ پڑھیں
