3. The dimensions of a room are 9m × 8m × 6.5m. It has one door of dimensions
2m × 1.5m and two windows, each of dimensions 1.5m × 1m. Find the cost of
white washing the walls at the rate of ₹10.50/m².
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Answer:
area of room is 489.6m
area of door is 3
area of windows is 1.5*2 equal. to 3
area of walls is 489.6m-3-3 equal to 483.6
wite washing of walls is 483.6*10.50 equal to 5077.8
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