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mathematics perimeter and area 1 the length and breadth of a rectangle piece of land are in the ratio 5:2 if the total cost of fencing it at rs 12.5 per metre is rs 25000 find it's length and breadth |
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Answer» Answer:
Given :
To find :
Step-by-step explanation: Finding the Perimeter of rectangular piece of land, So, Perimeter of rectangular piece of land = Total cost of fencing / RATE of fencing Substituting the VALUES in the above FORMULA, we get, = 25000/12.5 = 2000. Thus, Perimeter of rectangular piece of land = 2000 m². Now, Let, the length and breadth of a rectangle piece of land are in the ratio be 5x and 2x. We know that, Perimeter of the rectangle = 2 ( Length + breadth)Substituting the values in the above formula, we get, ➮ 2000 = 2 ( 5x + 2x) ➮ 2000 = 10x + 4x ➮ 2000 = 14x Or, 14x = 2000 ➮ x = 2000/14 ➮ x = 142.85 Hence, Lenght of the rectangular plot = 5x = 5 × 142.85 = 714.25 m. Breadth of the rectangular plot = 2x = 2 × 142.85 = 285.7 m. |
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