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A shuttle cock used for playing badminton has the shape of the combination of

  • A.a cylinder and a sphere
  • B.a cylinder and a hemisphere
  • C.a sphere and a cone
  • D.frustum of a cone and a hemisphere

Answer: D

The cork nose of the shuttlecock is a rounded dome - a hemisphere. The feather skirt is circular at both ends, narrow where it meets the cork and wide at the open end, closing to a point at neither - a frustum of a cone.

A sphere would make the base fully round rather than flat against the feathers, and a plain cone would taper to a point instead of flaring open.

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