Hollow Hemisphere: Surface Area and Volume
Hollow Hemisphere: Surface Area and Volume
Secondary 2
A hollow hemispheric container has an external radius of \(15\) cm and an internal radius \(12\) cm.
Given that \(\pi =3.142\),
- find the total surface area of the container.
- find the volume of the container.
- If the hemispheric container is melted and recast into small cubes of length \(2\) cm on each side. Find the maximum number of cubes which can be made.
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Answer:(a) \(2570\text{ cm}^2\) (b) \(3450\text{ cm}^3\) (c) \(431\) cubes
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