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Round Numbers

round numbers puzzle

Point A is the circle’s center. What is its radius?

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round numbers puzzle solution

A rectangle’s diagonals are equal, so the radius is simply 8″.

March 12, 2009January 21, 2013 | Puzzles

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Futility Closet is a collection of entertaining curiosities in history, literature, language, art, philosophy, and mathematics, designed to help you waste time as enjoyably as possible.

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