A room is 14 m long, 0 m wide . It has two doors, each measuring 2 m by 1.5 m and one window, each measuring 1.5 by 1.2 . the cost of white washing. its four walls at ₹ 7.50 per m² is ₹ 990. find the height of the room.
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Answer:
Height of the room is 2.75 meter.
Step-by-step explanation:
Cost of whitewashing for walls = 7.50 per meter²
Total cost of whitewashing = 990 rupees
Area on which whitewashing is done = 990 ÷ 7.5 = 132 meter²
Area of the 4 walls = 2(length × height) + 2(Width × height)
Let the height be 'h'
2(14h) + 2(10h) = 132
28h + 20h = 132
48h = 132
h =
h = 2.75 meter
Height of the room is 2.75 meter.
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