MAA MinuteMath: September 2, 2009

Wednesday, September 2, 2009

September 2, 2009

A wooden cube n units on a side is painted red on all six faces and then cut into n³ unit cubes. Exactly one-fourth of the total number of faces of the unit cubes are red. What is n?

Interactive version of problem and solution.

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Exercise your mind daily with a problem from the AMC-8, AMC-10, or AMC-12, provided by Mathematical Association of America's American Mathematics Competitions.

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Curriculum Inspirations is a collection of resources for Middle and High School Math Teachers that demonstrate practical ways to engage students in the lively exploration of mathematics and mathematical thinking using problems from America’s longest-running and most successful mathematics competition. Developed by James Tanton, these resources include Ten Problem Solving Strategy Essays and Curriculum Bursts.

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