A rectangular grassy plot 110m long and 65m wide has a gravel path 3m wide all around it on the inside. Find the cost of levelling the path at 80 paise per square meter.
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Answer:
Area of the plot =160×45m=7200m
2
Width of the path =2.5m
Inner length of the plot =160−(2×2.5)=155m
Inner breadth of the plot =45−(2×2.5)=40m
Area of the plot excluding the path =155×40=6200m
2
Area of the path =7200m
2
−6200m
2
=1000m
2
∴ Cost of gravelling the path=1000×
100
75
=Rs.750
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