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- Surface Areas and Volumes - Exercise 13.1
- Surface Areas and Volumes - Exercise 13.2
- Surface Areas and Volumes - Exercise 13.3
- Surface Areas and Volumes - Exercise 13.4
- Surface Areas and Volumes - Exercise 13.5
- Surface Areas and Volumes - Exercise 13.6
- Surface Areas and Volumes - Exercise 13.7
- Surface Areas and Volumes - Exercise 13.8
- Surface Areas and Volumes - Exercise 13.9

A lead pencil consists of a cylinder of wood with a solid cylinder of graphite filled in the

interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the

length of the pencil is 14 cm, find the volume of the wood, and that of the graphite. (Assume π

= 22/7)

Answer:

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