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ibps-rrb-os1 2017 ยท Question 44 of 74

Ratio between curved surface area and total surface area of a circular cylinder is 3 : 5. If curved surface area is 1848 cm3 then what is the height of cylinder.

Ratio & Proportion

  1. A28
  2. B14
  3. C17
  4. D21Correct
  5. E7

Answer: D. 21

Explanation

2๐œ‹๐‘Ÿโ„Ž 2๐œ‹๐‘Ÿ(๐‘Ÿ+โ„Ž) = 3 5 5h = 3r + 3h 2h = 3r and 2ฯ€rh = 1848 2 ร— 22 7 ร— 2 3 โ„Ž ร— โ„Ž = 1848 โ„Ž = 21

Source: IBPS RRB PO Prelims 2017 Memory Based Paper (Adda247) ยท memory-based

โ† Q43View full paper (74 questions)Q45 โ†’

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