A window of dimensions 3m by 2m is on the wall of dimension 10m x 10m.
Find the cost of painting the wall if the rate of painting is ₹ 2.50 per square
metre.
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Length of window = 3 m
Breadth if window = 2 m
Area of window = l × b
= 3 × 2
= 6 m².
Length of wall = 10 m
Breadth of wall = 10 m
Area of wall = l × b
= 10 × 10
= 100 m²
Total are of wall excluding window
= 100 - 6
= 94 m².
Cost of painting 1m² = Rs. 2.50
Cost of painting 94m² = 94 × 2.50
= Rs. 235.
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