CAT Quantitative Ability Questions | CAT Mensuration questions
Comprehension
Directions for questions: Read the information given below and answer the questions that follow
Consider a cylinder of height h cms and radius r =π/2 cms as shown in the figure (not drawn to scale). A string of a certain length, when wound on its cylindrical surface, starting at point A and ending at point B, gives a maximum of n turns (in other words, the string’s length is the minimum length required to wind n turns).
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Explanatory Answer
Method of solving this CAT Quantitative Ability Question from Mensuration question
(a) Vertical spacing in cms = h/n
because the total height h used divided equally in n parts.
Also the strings’ length is the minimum required to wound n turns.