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      Question

      Find the length of a wire radius 0.40 cm which can

      completely cover the surface of a cylinder whose height is 1.6m and base radius 21 cm?
      A 211.20 m Correct Answer Incorrect Answer
      B 528 m Correct Answer Incorrect Answer
      C 277.2 m Correct Answer Incorrect Answer
      D 264 m Correct Answer Incorrect Answer

      Solution

      wire cover the surface is equal to its diameter. 160/0.8 = 200 rounds Length of wire = 2 ×22/7× 21 × 200 = 264 m

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