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      Question

      The base of the triangular area is two times its

      height. If the cost of farming area is Rs. 2000 and Rs. 80 per hectare. Find its base  (1 hectare = 10000 m²).  
      A 1000 Correct Answer Incorrect Answer
      B 840 Correct Answer Incorrect Answer
      C 500 Correct Answer Incorrect Answer
      D 1200 Correct Answer Incorrect Answer

      Solution

      Area of the field = Total cost/rate = 2000/80 = 25 hectares   = 25 x 10000 m2 = 250000 m2 Let altitude = a m Then base = 2a Now, ½ x b x h = 250000 ½ x 2a x a = 250000 a2 = 250000 a = 500 m  base = 1000 m

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