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The cost of fencing a square park at the rate of 20 per metre is rupees 8000. Find the length of side of the square. step by step |
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Answer» 100mStep-by-step explanation:In such cases cost = rate * area (or perimeter) In this question, we have the cost of FENCING, so it's about the perimeter. => Cost = Rate * Perimeter=> 8000 = 20 * perimeter => 8000/20 = perimeter=> 400 = perimeterAs we know, perimeter of square is 4 times of the length of the SIDE. If length of the side is 'a', then the perimeter is 4a. => 400 = 4a => 400/4 = a => 100 = a Hence, the length of side of the square is 100M. |
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