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Problem of the Day #278: The Perfect Parasol December 22, 2011

Posted by Saketh in : potd , trackback

Sreenath received a $2$x$2$x$10$ box of coal bricks from Albert. He wants to use it as a parasol. If the sun is directly overhead, and Sreenath can orient the box any way he wishes, what is the greatest possible area of its shadow?

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