a door of dimension 3 metre into 3 metre is on the wall of dimensions and metre into 10 M find the cost of painting the wall if the rate of painting is Rs 2.50 per square metre
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Area of door
= Length × Breadth
= 3 m × 2 m
= 6 m^2
Area of wall including door
= Length × Breadth
= 10 m × 10 m
= 100 m^2
Area of wall excluding door
= 100 - 6
= 94 m^2
Total labour charges for painting the wall is
= 2.50 × 94
= Rs. 235
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