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      Question

      A right circular cylinder of height 12 cm is covered by

      a rectangular sheet of aluminum foil of size 12 cm ร— 31.4 cm. Calculate the volume of the cylinder.
      A 576.12 Correct Answer Incorrect Answer
      B 941.14 Correct Answer Incorrect Answer
      C 742.14 Correct Answer Incorrect Answer
      D 654.12 Correct Answer Incorrect Answer

      Solution

      if tin foil is covered then the curved surface area of cylinder is equal to the area of tin foil. Curved surface area = 16 ร—22 H = 16cm Volume = (C.S.A)2 /4 ฯ€ h = (12ร—31.4ร—12 ร—31.4ร—7) /4ร—22ร—12 = 20705.16/22 ย  =941.14cm3

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