Find the cost of cementing a wall of length 14 m × 11 m which is provided with spaces for a door of dimension 4m × 2.8 m and a window of dimension 1.5 m × 1.2 m at the rate of ₹5.75 per m².
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Answer:
Rs. 810.75
Step-by-step explanation :
Dimensions of rectangle wall= 14m × 11m
dimensions of door= 4m × 2.8m
dimensions of window = 1.5m × 1.2m
cost of cementing per m²= Rs. 5.75
Area is to be cemented= Area of wall -(area of door + area of window )
= 11×14 -(4×2.8 + 1.5×1.2)
=154 - ( 11.2 + 1.80)
=154 - (13.0)
=154 - 13
= 141m²
cost for cementing 141m² = 141 × 5.75
= Rs. 810.75
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