find the area of a path 2m wide laid inside along the boundary of a rectangular park of dimension 100m x 60m. find the cost of gravelling it at the rate of ₹30 per square metre
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1) Length = 60m. Breadth = 40m. width = 2 m. So, by using formula of area of rectangle. Area of rectangle = length × breadth. ...
2)Length of inner rectangle = 60 - 2(2) = 56m. Breadth of inner rectangle = 40-2(2) = 36m. hence , Area of path = (60×40) - (56×36) = 2400 - 2016 = 384m² Now, cost of gravelling is = Rs. 11 / m²
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