3. A rectangular plot is 120 m long and 50 m broad. A path of untform width of 10 m runs round it on the inside. Find the cost of covering the path with bricks at Rs. 0.67 per square metre.
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Length of the path = ✓(120² + 50²) = 130
Length of the path = ✓(120² + 50²) = 130Hence, it will take Rs. 130×10×0.67 = Rs.871
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