Volume and surface area of a sphere

Volume and surface area of a sphere

Secondary 2
5 marks
TGM Original Questions

A solid spherical ornament has radius 6 cm. Leave your answers in terms of \(\pi\).

  1. Find its volume.[2]
  2. Find the area to be painted. Explain why no flat circular face is included.[3]

Solution:

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Answer:(a) \(288\pi\text{ cm}^3\) (b) \(144\pi\text{ cm}^2\); a sphere has no flat face.

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