Question
The area of four walls of a room is 120 cm2.
If the length and breadth of the room were equal and the height of the room is 5 cm, then what is the area of the floor?ÂSolution
According to question,  => l = b  Area of the wall = 2(l + b)h  => 120 = 2(l + l) × 5  => 120 = 4 × l × 5  => l = 120/20 = 6 cm  Area of the floor = l × b = 6 × 6 = 36 cm2Â
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