A door-frame of dimensions 3m x 2m is fixed on the wall of dimensions 10m x 10m. Find the total labour charges for painting the wall if the labour charges for painting 1m² of the wall is 2.50 rupees .
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Answer:
area of door = 6m2
area of wall =100m2
total area of wall = area of wall - area of door
total area of wall =100-6=94m2
cost of painting for 1m2=2.5rs.
cost of painting for 94m2=94×2.5=235rs
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