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    Question

    What is the total cost of painting a conical flask at

    the rate of Rs. 60 per square metre? Statement I : The radius and the height of the flask are 42 m and 36 m respectively Statement II: The area of the base of Flask is 462 sq. m and its height is 21 m. In each of the following questions, a question and two statements I and II are given. You have to decide whether the date given in the statements are sufficient to answer the question or not.
    A If the data in statement I alone is sufficient to answer the question. Correct Answer Incorrect Answer
    B If the data in statement II alone is sufficient to answer the question. Correct Answer Incorrect Answer
    C If the data either in statement I alone or statement II alone are sufficient to answer the question. Correct Answer Incorrect Answer
    D If the data given in both I and II together are not sufficient to answer the question. Correct Answer Incorrect Answer
    E If the data in both the statements I and II together are necessary to answer the question Correct Answer Incorrect Answer

    Solution

    From statement I, r = 42 m, h = 36 m, so cost of painting = 60 ├Ч┬а╧Аrl From II: pi┬а├Ч┬а r┬а├Ч┬а r= 462, so r can be calculated, h = 21 m, so I =pi┬а├Ч ┬аr┬а├Ч ┬аl, so I can also be calculated. cost of painting = 60 ├Ч ╧Аrl

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