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    				| 1. | The perimeter of a square plot = 360 m. Find :(i) its area.(ii) cost of fencing its boundary at the rate of Rs 40 per meter.(iii) cost of leveling the plot at Rs 60 per square meter. | 
| Answer» Given, perimeter of square plot = 360 m ∵ Perimeter of the square = 4 x its side ∴ 4 x side of square = 360 m ⇒ side of the square = (360/4) m = 90 m (i) The area of the square field = (side)² = (90 m)² = 90 m x 90 m = 8100 m² (ii) Cost of fencing at Rs 40 per metre = 8100 m2 x Rs 40 per metre = Rs 324000 (iii) Cost of levelling at Rs 60 per m² = 8100 m² x Rs 60 per m² = Rs 486000 | |