5. A room is 30 m long, 20 m wide and 6 m high.Find the cost of painting the room at the rate of 6.50 per m².
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Answer:
the total cost is = (20*6*2+30*6*2+30*20)*6.5
Step-by-step explanation:
you can imagine a room with four side surface plus a ceiling . we don't count the underneath side.
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