Hollow Pipe: Base Area, Volume of Metal & Total Surface Area
Hollow Pipe: Base Area, Volume of Metal & Total Surface Area
TGM Original
The diagram shows a hollow cylindrical pipe of height measuring \(12\) cm which has an internal radius of \(3.5\) cm and external radius of \(4\) cm. Find
- the base area of the pipe,
- the volume of metal used to make the pipe,
- the total surface area of the pipe.
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Answer:(a) \(3.75\pi\text{ cm}^2\). (b) \(45\pi\text{ cm}^3\). (c) \(187.5\pi\text{ cm}^2\).
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