SOLUTION: The outside of an unpainted 3cm by 4cm by 5cm cuboid is painted blue. It is then cut into 1cm cubes. How many of the 1cm cubes have no paint on them? Establish a rule for a cube a

Algebra ->  Proofs -> SOLUTION: The outside of an unpainted 3cm by 4cm by 5cm cuboid is painted blue. It is then cut into 1cm cubes. How many of the 1cm cubes have no paint on them? Establish a rule for a cube a       Log On


   

Question 277579: The outside of an unpainted 3cm by 4cm by 5cm cuboid is painted blue. It is then cut into 1cm cubes. How many of the 1cm cubes have no paint on them? Establish a rule for a cube a cm by b cm by c cm.
Answer by solver91311(24713) About Me  (Show Source):
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If you have a dimension , then one cube on each end will be painted and therefore will remain unpainted. The general rule is then:




John