. A door of length 2 m and breadth 1m and a window of length 1 m and breadth 0.5 m are


. A door of length 2 m and breadth 1m and a window of length 1 m and breadth 0.5 m are fitted in a wall
4.5 m in length and 4 m in breadth. Find the cost of washing the wall at the rate of 20 per m²de the park all around. Find the​


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