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    Question

    The base of a triangular field is 400 metres and its

    height 250 metres. Find the area of the field and also calculate the charges for supplying water to the field at the rate of Rs.15 per sq. hectare?
    A 5,000 m², Rs.150 Correct Answer Incorrect Answer
    B 50,000 m², Rs.75 Correct Answer Incorrect Answer
    C 10,000 m², Rs.75 Correct Answer Incorrect Answer
    D 25,000 m², Rs.750 Correct Answer Incorrect Answer

    Solution

    Area = 1/2 ×  base ×  height = 1/2 ×  400 ×  250 = 50,000 m2 ∴ Cost = Rate x Area = (15 ×  50000)/10000 = Rs.75 (one hectare= 10,000 m2 )    

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