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Mensuration - Quant/Math - CAT 2013

  1. Algebra
  2. Progressions
  3. Averages
  4. Clocks and Calendars
  5. Data Sufficiency
  6. English Grammar
  7. Function
  8. Geometry
  9. Coordinate Geometry
  10. Interest
  11. Mensuration
  12. Mixtures & Alligations
  13. Number System
  14. Percentages
  15. Permutation & Combination
  16. Pipes & Cisterns And Work & Time
  17. Probability
  18. Profit & Loss
  19. Races
  20. Ratio, Proportion
  21. Speed, Time & Distance
  22. Trigonometry
  23. Miscellaneous
  24. General Knowledge
Question 4 the day: April 01, 2003

The question for the day is from the topic of Mensuration
A square sheet of paper is converted into a cylinder by rolling it along its length. What is the ratio of the base radius to the side of the square?

(1) (2)
(3) (4)
Correct Answer - (1)

Solution:


Surface area of the cylinder = Surface area of the square

Here height 'h' of the cylinder = side of the square since it is rolled along its length.

Base radius r =

Ratio of base radius to side of square = : a =




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