3. A rectangular grassy lawn measuring 40 m by 28 m has been surrounded externally by a 3.0 m
wide path. Calculate the cost of graveling the path at the rate of ₹ 110 per m².
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Area of grassy lawn = 38*25 m^2 = 950 m^2The rectangle ... cost of gravelling the path at the rate of 120Rs per m sq.
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