walls and ceiling at20 per square metre.17. The area of the 4 walls of – InterviewSolution

1.	walls and ceiling at20 per square metre.17. The area of the 4 walls of a room is 168 m2. The breadth and height of the room are 10is 77 m The length and breadth of the room are75and 4 m respectively. Find the length of the room.
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