A door of dimensions 3m x 2m is on the wall of dimension 10m x 10m. Find the cost of painting the wall if rate of painting is Rs.2.50 per sq m.
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Answer:
Painting of the wall has to be done excluding the area of the door.
Area of the door = L x b
= 3 x 2m² = 6m²
Area of wall including door = side x side = 10 m x10 m = 100m²
Area of wall excluding door (100-6) m² = 92m²
Total labour charges = Rs 2.50 × 94
= Rs 235
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