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Miscellaneous·2014·Easy

The diameter of the base of a cone is 6 cm, altitude is 4 cm. What is the approximate curved surface area of the cone ?

The diameter of the base of a cone is 6 cm, altitude is 4 cm. What is the approximate curved surface area of the cone ?

Options

  1. a.

    45 square cm

  2. b.

    47 square cm

    Correct answer
  3. c.

    49 square cm

  4. d.

    51 square cm

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