The floor of a rectangular hall has a perimeter 250 m. If the cost of painting the four walls at the rate of 10 per m² is * 15000, find the height of the hall. [Hint: Area of the four walls = Lateral surface area.]
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If the cost of painting the four walls at the rate of ` 10 per m2 is ` 15000, find the height of the hall. [Hint : Area of the four walls = Lateral surface area.] Let the length, breadth and height of the rectangular hall be l m, b m and h m respectively. Hence, the height of the hall is 6 m.
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