Area of the first path = 35 x 4 = 140 m², Area of the second path = 40 x 4 = 160 m² and Area of centre = 4 x 4 = 16 m² Total area of both paths = 140 + 160 – 16 = 284 m² Area of the lawn with path = 35 x 40 = 1400 m² Area of the lawn without path = 1400 - 284 = 1116 m² ∴ Cost of watering = 1116 × 5 = Rs. 5580
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