In each of the following questions is followed by information given in three statements. You have to study the questions along with the statements and decide the information given in which of the statement(s) is necessary and sufficient to answer the question.
What is the volume of the cylindrical tank ?
I. Area of the base is X square metres
II. Height of the tank is Y metres
III. Diameter of the base is equal to height of the tank
I : Area of base is given but height is unknown. Therefore, it is insufficient.
Similarly, II alone and III alone is not sufficient.
I & II : Value of $$\pi$$ * $$r^{2}$$ is known and height is also known. Thus, we can find volume which is the product of these two.
Thus, I & II together are sufficient.
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